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Earth-type exoplanete around Centauri Proxima - Artist's impression of the planet orbiting Proxima Centauri: Artist's view of Planet Proxima b orbiting around the red dwarf star Proxima of Centauri, the closest star to the solar system. The double star Alpha Centauri AB is visible at the top right of the image. Proxima b is slightly more massive than the Earth, orbit in habitable areas where the temperature would allow the presence of liquid water on its surface. This artist's impression shows a view of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the Solar System. The double star Alpha Centauri AB also appears in the image to the upper-right. Proxima b is a little more massive than the Earth and orbits in the habitable zone around Proxima Centauri, where the temperature is suitable for liquid water to exist on its surface

Earth-type exoplanete around Centauri Proxima - Artist's impression of the planet orbiting Proxima Centauri: Artist's view of Planet Proxima b orbiting around the red dwarf star Proxima of Centauri, the closest star to the solar system. The double star Alpha Centauri AB is visible at the top right of the image. Proxima b is slightly more massive than the Earth, orbit in habitable areas where the temperature would allow the presence of liquid water on its surface. This artist's impression shows a view of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the Solar System. The double star Alpha Centauri AB also appears in the image to the upper-right. Proxima b is a little more massive than the Earth and orbits in the habitable zone around Proxima Centauri, where the temperature is suitable for liquid water to exist on its surface

Miller, Ron (b.1947)

PIX4608073

Earth observed at night by satellite. Mosaic of hundreds of images obtained by four satellites DMSP (Defense Meteorological Satellite Program) from October 1994 to March 1995 - The image is a composite of hundreds of pictures made by the Defense Meteorological Satellite Program (DMSP) currently operates four satellites carrying the Operational Linescan System (OLS) in low-altitude polar orbits. Three of these satellites record nighttime data. The DMSP-OLS has a unique capability to detect low levels of visible-near infrared (VNIR) radiance at night. With the OLS 'VIS' band data it is possible to detect clouds illuminated by moonlight, plus lights from cities, towns, industrial sites, gas flares, and ephemeral events such as fires and lightning-illuminated clouds. October 1994 - March 1995 DMSP nighttime data collected when moonlight was low. Using the OLS thermal infrared band, areas containing clouds were removed and the remaining area used in the time series: Earth by night

Earth observed at night by satellite. Mosaic of hundreds of images obtained by four satellites DMSP (Defense Meteorological Satellite Program) from October 1994 to March 1995 - The image is a composite of hundreds of pictures made by the Defense Meteorological Satellite Program (DMSP) currently operates four satellites carrying the Operational Linescan System (OLS) in low-altitude polar orbits. Three of these satellites record nighttime data. The DMSP-OLS has a unique capability to detect low levels of visible-near infrared (VNIR) radiance at night. With the OLS 'VIS' band data it is possible to detect clouds illuminated by moonlight, plus lights from cities, towns, industrial sites, gas flares, and ephemeral events such as fires and lightning-illuminated clouds. October 1994 - March 1995 DMSP nighttime data collected when moonlight was low. Using the OLS thermal infrared band, areas containing clouds were removed and the remaining area used in the time series: Earth by night

PIX4669194

Exoplanete Gliese 1214 b -: Gliese 1214 b (or GJ 1214 b) is a super-earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on December 16, 2009. It is located about 40 light years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light-years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a Super-earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After Corot-7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low de

Exoplanete Gliese 1214 b -: Gliese 1214 b (or GJ 1214 b) is a super-earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on December 16, 2009. It is located about 40 light years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light-years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a Super-earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After Corot-7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low de

Miller, Ron (b.1947)

PIX4608051

Rhea, satellite of Saturn, seen by Cassini - Saturn's moon Rhea seen by Cassini - Mosaic of images obtained by the Cassini probe in March 2015. Rhea is the second largest satellite in Saturn (1528 km in diameter). After a couple of years in high - inclination orbits that limited its ability to encounter Saturn's moons, Nasa's Cassini spacecraft returned to Saturn's equatorial plane in March 2015.Image taken using clear, green, infrared and ultraviolet spectral filters were combined to create these enhanced color views, which offer an expanded range of the colors visible to human eyes in order to highlight subtle color differences across Rhea's surface. The moon's surface is fairly uniform in natural color.This view at right is centered at 9 degrees north latitude, 254 degrees west longitude. Resolution in this mosaic is 300 meters (984 feet) per pixel. The image was acquired at a distance that ranged from about 36,000 to 32.100 miles (57,900 to 51,700 kilometers) from Rhea

Rhea, satellite of Saturn, seen by Cassini - Saturn's moon Rhea seen by Cassini - Mosaic of images obtained by the Cassini probe in March 2015. Rhea is the second largest satellite in Saturn (1528 km in diameter). After a couple of years in high - inclination orbits that limited its ability to encounter Saturn's moons, Nasa's Cassini spacecraft returned to Saturn's equatorial plane in March 2015.Image taken using clear, green, infrared and ultraviolet spectral filters were combined to create these enhanced color views, which offer an expanded range of the colors visible to human eyes in order to highlight subtle color differences across Rhea's surface. The moon's surface is fairly uniform in natural color.This view at right is centered at 9 degrees north latitude, 254 degrees west longitude. Resolution in this mosaic is 300 meters (984 feet) per pixel. The image was acquired at a distance that ranged from about 36,000 to 32.100 miles (57,900 to 51,700 kilometers) from Rhea

PIX4625591

Graphic computer of objects around the earth - View of debris in geostationary orbit (35,785 km) around the Earth. Approximately 11,000 objects over 10 cm have been identified. Most of these debris is in low orbit. The number of debris between 10 cm and 1 cm in diameter, greater than 100,000; particles less than 1 cm must exceed 10 million. The GEO images are images generated from a distant oblique vantage point to provide a good view of the object population in the geosynchronous region (around 35,785 km altitude). Note the larger population of objects over the northern hemisphere is due mostly to Russian objects in high - inclination, high - eccentricity orbits. Approximately 11,000 objects larger than 10 cm are known to exist. The estimated population of particles between 1 and 10 cm in diameter is greater than 100,000. The number of particles smaller than 1 cm probably exceeds tens of millions

Graphic computer of objects around the earth - View of debris in geostationary orbit (35,785 km) around the Earth. Approximately 11,000 objects over 10 cm have been identified. Most of these debris is in low orbit. The number of debris between 10 cm and 1 cm in diameter, greater than 100,000; particles less than 1 cm must exceed 10 million. The GEO images are images generated from a distant oblique vantage point to provide a good view of the object population in the geosynchronous region (around 35,785 km altitude). Note the larger population of objects over the northern hemisphere is due mostly to Russian objects in high - inclination, high - eccentricity orbits. Approximately 11,000 objects larger than 10 cm are known to exist. The estimated population of particles between 1 and 10 cm in diameter is greater than 100,000. The number of particles smaller than 1 cm probably exceeds tens of millions

PIX4642695

EDRS Relay Satellite Network - Artist's view - The European Data Relay Satellite System - EDRS - The European Data Relay Satellites (EDRS) programme is a geostationary orbit satellite network project enabling faster and better data transmission between satellites and ground stations using new communication technologies. EDRS will replace ESA's Artemis data relay satellite, which has been in operation since 2003 and will reach the end of life in the first half of the next decade. December 2008. Artist impression of European Data Relay Satellite (EDRS) system. EDRS is a network of satellites that will use geostationary satellites to communicate with both ground stations and other satellites - whose lower orbits restrict the time that they can 'see' any one ground station. Allowing low - Earth orbit satellites to deliver data continuously, instead of storing it on board for transmission while overflying a ground station, will increase the timeliness with which we receive data improving gl

EDRS Relay Satellite Network - Artist's view - The European Data Relay Satellite System - EDRS - The European Data Relay Satellites (EDRS) programme is a geostationary orbit satellite network project enabling faster and better data transmission between satellites and ground stations using new communication technologies. EDRS will replace ESA's Artemis data relay satellite, which has been in operation since 2003 and will reach the end of life in the first half of the next decade. December 2008. Artist impression of European Data Relay Satellite (EDRS) system. EDRS is a network of satellites that will use geostationary satellites to communicate with both ground stations and other satellites - whose lower orbits restrict the time that they can 'see' any one ground station. Allowing low - Earth orbit satellites to deliver data continuously, instead of storing it on board for transmission while overflying a ground station, will increase the timeliness with which we receive data improving gl

P. Carril

PIX4642966

Exoplanete Corot - 7b - Artist's impression of Corot - 7b - Artist's view of the extrasolar planet Corot - 7b, a small terrestrial exoplanet located in the constellation Unicorn. Artist's impression of the extrasolar planet Corot - 7b a small exoplanet located in the constellation of Monoceros. The exoplanet Corot - 7b is so close to its Sun - like host star that it must experience extreme conditions. This planet has a mass five times that of Earth's and is in fact the closest known exoplanet to its host star, which also makes it the fastest - - - it orbits its star at a speed of more than 750,000 kilometres per hour. The probable temperature on its day - face”” is above 2,000 degrees, but minus 200 degrees on its night face. Theoretical models suggest that the planet may have lava or boiling oceans on its surface. The artist has provided an impression of how it may look like if it were covered by lava. The sister planet, Corot - 7c, is seen in the distance.

Exoplanete Corot - 7b - Artist's impression of Corot - 7b - Artist's view of the extrasolar planet Corot - 7b, a small terrestrial exoplanet located in the constellation Unicorn. Artist's impression of the extrasolar planet Corot - 7b a small exoplanet located in the constellation of Monoceros. The exoplanet Corot - 7b is so close to its Sun - like host star that it must experience extreme conditions. This planet has a mass five times that of Earth's and is in fact the closest known exoplanet to its host star, which also makes it the fastest - - - it orbits its star at a speed of more than 750,000 kilometres per hour. The probable temperature on its day - face”” is above 2,000 degrees, but minus 200 degrees on its night face. Theoretical models suggest that the planet may have lava or boiling oceans on its surface. The artist has provided an impression of how it may look like if it were covered by lava. The sister planet, Corot - 7c, is seen in the distance.

PIX4573791

Exoplanete Gliese 1214 b - Gliese 1214 b (or GJ 1214 b) is a super-Earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on 16 December 2009. It is located about 40 years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light - years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a super - Earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After COROT - 7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low dens

Exoplanete Gliese 1214 b - Gliese 1214 b (or GJ 1214 b) is a super-Earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on 16 December 2009. It is located about 40 years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light - years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a super - Earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After COROT - 7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low dens

Miller, Ron (b.1947)

PIX4574069

Exoplanete Gliese 1214 b -: Gliese 1214 b (or GJ 1214 b) is a super-earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on December 16, 2009. It is located about 40 light years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light-years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a Super-earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After Corot-7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low de

Exoplanete Gliese 1214 b -: Gliese 1214 b (or GJ 1214 b) is a super-earth exoplanet orbiting the star Gliese 1214 in the constellation Ophiuchus, whose discovery was announced on December 16, 2009. It is located about 40 light years from the Sun. It is the third discovered exoplanet whose size is smaller than that of a gas giant and the first on which water could be present in large quantities given its size and estimated mass. It could be the first ocean planet discovered. Gliese 1214 b is an extrasolar planet that orbits the star Gliese 1214. The parent star is 13 parsecs (approximately 40 light-years) from the Sun, in the constellation Ophiuchus. The planet was discovered in December 2009. It is classified as a Super-earth because it is larger than Earth but has a mass and radius significantly less than those of the gas giants in the Solar System. After Corot-7b, it is the second such planet to be known and is the first of a new class of planets with small size and relatively low de

Miller, Ron (b.1947)

PIX4608046

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - The cluster of galaxies in the Furnace is located about 55 million years away from Earth. This image shows only a detail of the cluster. Lower right, the barred spiral galaxy NGC 1365

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - The cluster of galaxies in the Furnace is located about 55 million years away from Earth. This image shows only a detail of the cluster. Lower right, the barred spiral galaxy NGC 1365

PIX4565382

Mine sur un asteroide - Illustration - Mining base on double asteroid 90 Antiope - Illustration - Artist view une base minere installee sur l'asteroid double 90 Antiope. Some day a it may be worthwhile to mine resources from a distant asteroid, whether for raw materials for building an orbiting structure (cheaper than rocketing the materials from Earth's surface) or for some exotic material found only on a particular asteroid. This image is a bird's eye view of a mining settlement on the double asteroid 90 Antiope, located in the main asteroid belt between the orbits of Mars and Jupiter. These two asteroids are about the same size - - 70 miles across - - and orbit around a common center like two ends of a barbell. The gap separating the two bodies is only about 40 miles. The extremely low surface gravity would permit the construction of delicate structures, such as the solar power array silhouetted against the sunny side of the sister asteroid, and would make it relatively easy to tran

Mine sur un asteroide - Illustration - Mining base on double asteroid 90 Antiope - Illustration - Artist view une base minere installee sur l'asteroid double 90 Antiope. Some day a it may be worthwhile to mine resources from a distant asteroid, whether for raw materials for building an orbiting structure (cheaper than rocketing the materials from Earth's surface) or for some exotic material found only on a particular asteroid. This image is a bird's eye view of a mining settlement on the double asteroid 90 Antiope, located in the main asteroid belt between the orbits of Mars and Jupiter. These two asteroids are about the same size - - 70 miles across - - and orbit around a common center like two ends of a barbell. The gap separating the two bodies is only about 40 miles. The extremely low surface gravity would permit the construction of delicate structures, such as the solar power array silhouetted against the sunny side of the sister asteroid, and would make it relatively easy to tran

Walter B Myers

PIX4640726

Comete 17P/Holmes 29/10/2007 - Comet 17P/Holmes October 29 2007 - View of comete 17P/Holmes and its weak hair. The faint outer coma of Comet 17P/Homes is seen here in a composite exposures on 29 October 2007. Holmes is currently located in the solar system between the orbits of Mars and Jupiter, and it moving away from the Earth since it's closest approach to the Sun at 191 million miles in May of 2007. At its closest approach to the Sun, it was still outside of the orbit of Mars. It is currently about 151 million miles from the Earth. The comet was discovered more than 100 years ago in 1892 by Edwin Holmes in London, England when it was probably undergoing a previous outburst when it became visible to the unaided eye at 4th magnitude.The reason for the outburst is unknown, but it is speculated that an internal chamber in the porous comet may have collapsed, exposing a large area of fresh ice to sunlight, causing a giant sublimation event that created the cloud around the nucleus that

Comete 17P/Holmes 29/10/2007 - Comet 17P/Holmes October 29 2007 - View of comete 17P/Holmes and its weak hair. The faint outer coma of Comet 17P/Homes is seen here in a composite exposures on 29 October 2007. Holmes is currently located in the solar system between the orbits of Mars and Jupiter, and it moving away from the Earth since it's closest approach to the Sun at 191 million miles in May of 2007. At its closest approach to the Sun, it was still outside of the orbit of Mars. It is currently about 151 million miles from the Earth. The comet was discovered more than 100 years ago in 1892 by Edwin Holmes in London, England when it was probably undergoing a previous outburst when it became visible to the unaided eye at 4th magnitude.The reason for the outburst is unknown, but it is speculated that an internal chamber in the porous comet may have collapsed, exposing a large area of fresh ice to sunlight, causing a giant sublimation event that created the cloud around the nucleus that

Jerry Lodriguss

PIX4570911

Planetary nebula NGC 5189 in the fly - This nebula is located about 3000 light years from Earth in the southern constellation of the fly. Image obtained by the Gemini and Hubble telescopes (HST). NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits drift due to precess

Planetary nebula NGC 5189 in the fly - This nebula is located about 3000 light years from Earth in the southern constellation of the fly. Image obtained by the Gemini and Hubble telescopes (HST). NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits drift due to precess

PIX4623115

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

PIX4604549

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

PIX4604559

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

PIX4604577

Earth seen by satellite - Earth seen by satellite - Mosaic of Earth images obtained by the Suomi NPP satellite in April 2015. On the right, cyclone Joalane passes over the Indian Ocean. This natural - color composite image of Earth was assembled from data acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi National Polar - orbiting Partnership (Suomi - NPP) spacecraft. It stitches together 671, 551, and 443 nanometer wavelength data from six orbits on April 9, 2015. Suomi NPP does not actually observe Earth from the perspective shown in this image. The satellite flies in a polar orbit at an altitude of 824 kilometers (512 miles), and its images have a resolution of 750 meters per pixel. In the image, the virtual camera looks down from the perspective of 8,300 kilometers (5,100 miles) above a point at 50 degrees South latitude and 40 degrees East longitude. Most of the scene is filled by the Indian Ocean (center and left), while parcels of the Atlantic (top le

Earth seen by satellite - Earth seen by satellite - Mosaic of Earth images obtained by the Suomi NPP satellite in April 2015. On the right, cyclone Joalane passes over the Indian Ocean. This natural - color composite image of Earth was assembled from data acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi National Polar - orbiting Partnership (Suomi - NPP) spacecraft. It stitches together 671, 551, and 443 nanometer wavelength data from six orbits on April 9, 2015. Suomi NPP does not actually observe Earth from the perspective shown in this image. The satellite flies in a polar orbit at an altitude of 824 kilometers (512 miles), and its images have a resolution of 750 meters per pixel. In the image, the virtual camera looks down from the perspective of 8,300 kilometers (5,100 miles) above a point at 50 degrees South latitude and 40 degrees East longitude. Most of the scene is filled by the Indian Ocean (center and left), while parcels of the Atlantic (top le

PIX4632011

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

PIX4604568

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

PIX4623091

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) is at the heart of the Virgo cluster and has a mass many times that of the Milky Way, itself no lightweight. Unlike our galaxy however, M87 is an elliptical galaxy. Though it appears more - or - less spherical on this photograph, a deep image shows it to be markedly elongated. Also unlike the Milky Way, M87 contains relatively little gas and dust. It is composed mainly of cool stars, which gives it a yellowish colour, in contrast to the blue of spiral galaxies. Despite the lack of star - forming materials, M87 is not a quiescent backwater. It is a powerful source of radio waves and the orbits of stars near its nucleus suggest they are held by a very m

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) is at the heart of the Virgo cluster and has a mass many times that of the Milky Way, itself no lightweight. Unlike our galaxy however, M87 is an elliptical galaxy. Though it appears more - or - less spherical on this photograph, a deep image shows it to be markedly elongated. Also unlike the Milky Way, M87 contains relatively little gas and dust. It is composed mainly of cool stars, which gives it a yellowish colour, in contrast to the blue of spiral galaxies. Despite the lack of star - forming materials, M87 is not a quiescent backwater. It is a powerful source of radio waves and the orbits of stars near its nucleus suggest they are held by a very m

PIX4611429

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. This range of performance covers th

PIX4604554

Sirius A and Sirius B in the Big Dog - Sirius A and Sirius B in Canis Major - Sirius A and Sirius B in the Big Dog seen by the Hubble space telescope in February 2004. The brightest source in this image is Sirius A, the brightest star in the sky in visible light, here overexposed to his companion, Sirius B (lower left), a white dwarf star orbiting Sirius A in 50 years. Sirius is located 8.6 years of light from Earth. This Hubble Space Telescope image shows Sirius, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed the image of Sirius (at center) so that the dim Sirius B (tiny dot at lower left) could be seen. The cross - shaped diffraction spikes and concentric rings around Sirius, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system. Sirius B is a white dwarf that orbits around Sirius every 50 years. Sirius, only 8.6 light - years from Earth, is the fifth closest star syst

Sirius A and Sirius B in the Big Dog - Sirius A and Sirius B in Canis Major - Sirius A and Sirius B in the Big Dog seen by the Hubble space telescope in February 2004. The brightest source in this image is Sirius A, the brightest star in the sky in visible light, here overexposed to his companion, Sirius B (lower left), a white dwarf star orbiting Sirius A in 50 years. Sirius is located 8.6 years of light from Earth. This Hubble Space Telescope image shows Sirius, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed the image of Sirius (at center) so that the dim Sirius B (tiny dot at lower left) could be seen. The cross - shaped diffraction spikes and concentric rings around Sirius, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system. Sirius B is a white dwarf that orbits around Sirius every 50 years. Sirius, only 8.6 light - years from Earth, is the fifth closest star syst

PIX4571735

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on its mobile launch table, shortly after its transfer from the Final Assembly Building at the Launch Zone (ZL - 3) of Ariane Launch Complex no.3 (ELA - 3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asi

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on its mobile launch table, shortly after its transfer from the Final Assembly Building at the Launch Zone (ZL - 3) of Ariane Launch Complex no.3 (ELA - 3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asi

S. Corvaja

PIX4604238

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on launch pad at the Launch Zone (ZL-3) of Ariane Launch Complex no.3 (ELA-3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asia. The payload mass was 8541 kg; the satellite masses totalled 7748 kg, with p

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on launch pad at the Launch Zone (ZL-3) of Ariane Launch Complex no.3 (ELA-3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asia. The payload mass was 8541 kg; the satellite masses totalled 7748 kg, with p

S. Corvaja

PIX4604252

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on its mobile launch table, shortly after its transfer from the Final Assembly Building at the Launch Zone (ZL - 3) of Ariane Launch Complex no.3 (ELA - 3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asi

Fusee Ariane 5 ECA - 06/2008 - The Ariane 5 ECA rocket - 06/2008 - Fusee Ariane 5 ECA on its launch pad at the Guyanese Space Center in Kourou. On board, two communication satellites, the Skynet 5C satellite and the Turksat 3A satellite. Flight V183 was launched on June 13, 2008. The Ariane 5 ECA launcher, on its mobile launch table, shortly after its transfer from the Final Assembly Building at the Launch Zone (ZL - 3) of Ariane Launch Complex no.3 (ELA - 3) at the Guiana Space Centre, Europe's Spaceport. Lift - off of flight V183 took place at 00:05 CEST/Paris on 13 June (22:05 UTC/GMT; 19:05 UTC - 3/Kourou [12 June]). The satellites were accurately injected into the correct transfer orbits about 30 minutes later. The payload comprised Skynet 5C - which will deliver secure communication links for UK government and military users - and Turksat 3A - which will provide telecommunication services and direct TV broadcasting for Turkey, Europe, the Middle East, North Africa and Central Asi

S. Corvaja

PIX4604244

Exoplanete Kepler-452 b - Artist's impression of the Kepler-452 b exoplanet: Kepler-452 b is an extrasolar planet probably of the Earth type, located in the habitable area of its star Kepler-452, a star similar to our Sun. This super-earth is located in the constellation Swan, about 1400 light years from Earth. This artist's concept depicts one possible appearance of the planet Kepler-452b, the first near-earth-size world to be found in the habitable zone of star that is similar to our sun. The habitable zone is a region around a star where temperatures are right for water to pool on the surface. Scientists do not know if Kepler-452b can support life or not. What is known about the planet is that it is about 60 percent larger than Earth, placing it in a class of planets dubbed “” Super-earths.”” While its mass and composition are not yet determined, previous research suggests that planets the size of Kepler-452b have a better than even chance of being rocky. Kepler-452b orbits its star

Exoplanete Kepler-452 b - Artist's impression of the Kepler-452 b exoplanet: Kepler-452 b is an extrasolar planet probably of the Earth type, located in the habitable area of its star Kepler-452, a star similar to our Sun. This super-earth is located in the constellation Swan, about 1400 light years from Earth. This artist's concept depicts one possible appearance of the planet Kepler-452b, the first near-earth-size world to be found in the habitable zone of star that is similar to our sun. The habitable zone is a region around a star where temperatures are right for water to pool on the surface. Scientists do not know if Kepler-452b can support life or not. What is known about the planet is that it is about 60 percent larger than Earth, placing it in a class of planets dubbed “” Super-earths.”” While its mass and composition are not yet determined, previous research suggests that planets the size of Kepler-452b have a better than even chance of being rocky. Kepler-452b orbits its star

PIX4574146

Globular cluster G1 (Mayall II) - Globular cluster G1 (Mayall II) - The G1 globular cluster is the brightest globular cluster in the group of about thirty galaxies known as the Local Group (including the Lactee Way). It is orbiting the Andromede galaxy and contains at least 300,000 stars. This image is a composite of visible and near infrared images obtained by the Hubble Space Telescope in July 1994. Hubble Space Telescope has captured a view of a globular cluster called G1, a large, bright ball of light in the center of the photograph consisting of at least 300,000 old stars. G1, also known as Mayall II, orbits the Andromeda galaxy (M31), the nearest major spiral galaxy to our Milky Way. Located 130,000 light - years from Andromeda's nucleus, G1 is the brightest globular cluster in the Local Group of galaxies. The Local Group consists of about 20 nearby galaxies, including the Milky Way. A glimpse into the cluster's finer details allow astronomers to see its fainter helium - burning

Globular cluster G1 (Mayall II) - Globular cluster G1 (Mayall II) - The G1 globular cluster is the brightest globular cluster in the group of about thirty galaxies known as the Local Group (including the Lactee Way). It is orbiting the Andromede galaxy and contains at least 300,000 stars. This image is a composite of visible and near infrared images obtained by the Hubble Space Telescope in July 1994. Hubble Space Telescope has captured a view of a globular cluster called G1, a large, bright ball of light in the center of the photograph consisting of at least 300,000 old stars. G1, also known as Mayall II, orbits the Andromeda galaxy (M31), the nearest major spiral galaxy to our Milky Way. Located 130,000 light - years from Andromeda's nucleus, G1 is the brightest globular cluster in the Local Group of galaxies. The Local Group consists of about 20 nearby galaxies, including the Milky Way. A glimpse into the cluster's finer details allow astronomers to see its fainter helium - burning

PIX4565191

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - clusters of galaxies situated about 55 million years ago - light. In the center of the image is the barree spiral galaxy NGC 1365; at the bottom right of the image, the interaction galaxy NGC 1316 - 17 (Fornax A), which is one of the strongest known radiosource. Galaxies can be separated by their appearance into two broad groups, spirals and ellipticals. An example of a spiral galaxy, NGC 1365, is seen in center of this picture. In contrast, most of the galaxies in this cluster are ellipticals, which contain little or no gas or evidence of star formation; indeed they are composed millions of rather old, yellowish stars. Unlike many of the stars in spiral systems, those in ellipticals have orbits which are not confined to a narrow plane, so the galaxy can have a shape anywhere between a perfect sphere and an American football. This kind of galaxy is the most common type in the photograph as it is in all of the nearb

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - clusters of galaxies situated about 55 million years ago - light. In the center of the image is the barree spiral galaxy NGC 1365; at the bottom right of the image, the interaction galaxy NGC 1316 - 17 (Fornax A), which is one of the strongest known radiosource. Galaxies can be separated by their appearance into two broad groups, spirals and ellipticals. An example of a spiral galaxy, NGC 1365, is seen in center of this picture. In contrast, most of the galaxies in this cluster are ellipticals, which contain little or no gas or evidence of star formation; indeed they are composed millions of rather old, yellowish stars. Unlike many of the stars in spiral systems, those in ellipticals have orbits which are not confined to a narrow plane, so the galaxy can have a shape anywhere between a perfect sphere and an American football. This kind of galaxy is the most common type in the photograph as it is in all of the nearb

PIX4565370

Asteroides threaten the Earth - Artist view - Asteroids threatening the Earth - Artist view - Title: Space Situational Awareness - Near Earth Objects Picture caption: The SSA-NEO system is based on syndicating and federating observation and tracking data provided by a large number of European and international sources. The key components include: -Observatories and astronomers with telescopes of various sizes, both professional and amateur -A central SSA-NEO data centre, the 'Small Bodies Data Centre', which uses astrometric measurements collected by the Minor Planet Center (USA) -An analysis capability to predict possible impact locations and assess dangers -Analyses related to risk mitigation, including the possible deflection of an asteroid -A system for issuing warnings and alerts to civil authorities in Europe Data on NeOS are collected from telescopes and radar systems worldwide. Each of these submit observations to the Minor Planet Center (MPC), operated by the International Ast

Asteroides threaten the Earth - Artist view - Asteroids threatening the Earth - Artist view - Title: Space Situational Awareness - Near Earth Objects Picture caption: The SSA-NEO system is based on syndicating and federating observation and tracking data provided by a large number of European and international sources. The key components include: -Observatories and astronomers with telescopes of various sizes, both professional and amateur -A central SSA-NEO data centre, the 'Small Bodies Data Centre', which uses astrometric measurements collected by the Minor Planet Center (USA) -An analysis capability to predict possible impact locations and assess dangers -Analyses related to risk mitigation, including the possible deflection of an asteroid -A system for issuing warnings and alerts to civil authorities in Europe Data on NeOS are collected from telescopes and radar systems worldwide. Each of these submit observations to the Minor Planet Center (MPC), operated by the International Ast

P. Carril

PIX4583884

Size comparison: Earth, Moon and Galilean satellites - Jupiter's four largest satellites and Earth and the Moon compared - Jupiter's four largest satellites, called Galilean satellites, compared to Earth and Moon. At the top, from left to right, in order of their distance to the planet Jupiter, we find Io, Europe, Ganymede and Callisto. Ganymede is the largest satellite in the solar system. Jupiter's four largest satellites, also known as the “” Galilean”” satellites since they were first observed by the Italian astronomer Galileo over 400 years ago, are worlds in their own right. Top row, left to right, in order from their distances from Jupiter, are: Io, Europa, Ganymede, Callisto Io is the most volcanic world in the Solar System, resurfacing itself continually with extremely hot and massive eruptions that spew material over 200 miles into space. Europa is about the same size as Earth's Moon, however unlike the Moon which is made up mostly of dry silicate materials, Europa is believe

Size comparison: Earth, Moon and Galilean satellites - Jupiter's four largest satellites and Earth and the Moon compared - Jupiter's four largest satellites, called Galilean satellites, compared to Earth and Moon. At the top, from left to right, in order of their distance to the planet Jupiter, we find Io, Europe, Ganymede and Callisto. Ganymede is the largest satellite in the solar system. Jupiter's four largest satellites, also known as the “” Galilean”” satellites since they were first observed by the Italian astronomer Galileo over 400 years ago, are worlds in their own right. Top row, left to right, in order from their distances from Jupiter, are: Io, Europa, Ganymede, Callisto Io is the most volcanic world in the Solar System, resurfacing itself continually with extremely hot and massive eruptions that spew material over 200 miles into space. Europa is about the same size as Earth's Moon, however unlike the Moon which is made up mostly of dry silicate materials, Europa is believe

Walter B Myers

PIX4629924

Star field in the constellation Sagittarius - Scattered stars in Sagittarius: Stars in Sagittarius seen by the space telescope Hubble. This stunning image, captured by the NASA/ESA Hubble Space Telescope's Advanced Camera for Surveys (ACS), shows part of the sky in the constellation of Sagittarius (The Archer). The region is rendered in exquisite detail - deep red and bright blue stars are scattered across the frame, set against a background of thousands of more distant stars and galaxies. Two features are particularly striking: the colours of the stars, and the dramatic crosses that burst from the centres of the brightest bodies. While some of the colours in this frame have been enhanced and tweaked during the process of creating the image from the observational data, different stars do indeed glow in different colours. Stars differ in colour according to their surface temperature: very hot stars are blue or white, while cooler stars are redder. They may be cooler because they are sma

Star field in the constellation Sagittarius - Scattered stars in Sagittarius: Stars in Sagittarius seen by the space telescope Hubble. This stunning image, captured by the NASA/ESA Hubble Space Telescope's Advanced Camera for Surveys (ACS), shows part of the sky in the constellation of Sagittarius (The Archer). The region is rendered in exquisite detail - deep red and bright blue stars are scattered across the frame, set against a background of thousands of more distant stars and galaxies. Two features are particularly striking: the colours of the stars, and the dramatic crosses that burst from the centres of the brightest bodies. While some of the colours in this frame have been enhanced and tweaked during the process of creating the image from the observational data, different stars do indeed glow in different colours. Stars differ in colour according to their surface temperature: very hot stars are blue or white, while cooler stars are redder. They may be cooler because they are sma

PIX4572253

A ring of rocks and dust is orbiting the Earth. The massive continent below is Pangee and the ocean to the west is Panthalassa. This is what Earth was supposed to look like at the end of Permian, about 260 million years ago, before the first dinosaurs appeared. This ring around the Earth was of earthly origin, constitutes debris thrown into orbit by collision with a meteorite or comet. Over time, these debris have fallen or fallen to Earth in a meteorite rain - A dusty ring arc orbits four thousand miles above Earth's equator. The massive continent below is Pangea and the ocean to the west is Panthalassa. This is how the Earth may have appeared during the end of the Permian period, a time just prior to the appearance of the dinosaurs, when continental drift was pulling Pangea apart into the seven continents we know today - 260 million years ago the Earth may have been host to ring arcs similar to the incomplete rings that currently circumscribe the planet Neptune . Unlike Neptune's rin

A ring of rocks and dust is orbiting the Earth. The massive continent below is Pangee and the ocean to the west is Panthalassa. This is what Earth was supposed to look like at the end of Permian, about 260 million years ago, before the first dinosaurs appeared. This ring around the Earth was of earthly origin, constitutes debris thrown into orbit by collision with a meteorite or comet. Over time, these debris have fallen or fallen to Earth in a meteorite rain - A dusty ring arc orbits four thousand miles above Earth's equator. The massive continent below is Pangea and the ocean to the west is Panthalassa. This is how the Earth may have appeared during the end of the Permian period, a time just prior to the appearance of the dinosaurs, when continental drift was pulling Pangea apart into the seven continents we know today - 260 million years ago the Earth may have been host to ring arcs similar to the incomplete rings that currently circumscribe the planet Neptune . Unlike Neptune's rin

Walter B Myers

PIX4669572

Exoplanets around 70 Virginis - A jovian planet orbiting 70 Virginis - Artist's view of the extrasolar planet 70 Vir B, a giant gas planet orbiting around a solar star, about 78 years old - light from the Sun. This exoplanet has about 6 times the mass of Jupiter and its distance from its star 70 Virginis is almost the same as that of Mercury from the Sun. A ringed 70 Vir B presides over the hot and airless terrain of a hypothetical moon. While it is not known if 70 Vir B has rings, it is certainly possible. 70 Vir B's rings would have no ice in them due to is proximity to its sun. Such rings would likely be less than 100 million years old and could have been formed from the shattered remnants of an asteroid that wondered too close to this giant planet. 70 Vir B's eccentric orbit would increase the likelihood of its encountering other objects in orbit around 70 Virginis. About 78 light years from the Earth astronomers believe that there is a large planet orbiting 70 Virginis, a type G5V

Exoplanets around 70 Virginis - A jovian planet orbiting 70 Virginis - Artist's view of the extrasolar planet 70 Vir B, a giant gas planet orbiting around a solar star, about 78 years old - light from the Sun. This exoplanet has about 6 times the mass of Jupiter and its distance from its star 70 Virginis is almost the same as that of Mercury from the Sun. A ringed 70 Vir B presides over the hot and airless terrain of a hypothetical moon. While it is not known if 70 Vir B has rings, it is certainly possible. 70 Vir B's rings would have no ice in them due to is proximity to its sun. Such rings would likely be less than 100 million years old and could have been formed from the shattered remnants of an asteroid that wondered too close to this giant planet. 70 Vir B's eccentric orbit would increase the likelihood of its encountering other objects in orbit around 70 Virginis. About 78 light years from the Earth astronomers believe that there is a large planet orbiting 70 Virginis, a type G5V

Walter B Myers

PIX4573224

Earth at the end of Permian - Ring arcs over the Permian Earth - A ring of rocks and dust is orbiting the Earth. The massive continent below is Pangee and the ocean to the west is Panthalassa. This is what Earth was supposed to look like at the end of Permian, about 260 million years ago, before the first dinosaurs appeared. This ring around the Earth was of earthly origin, constitutes debris thrown into orbit by collision with a meteorite or comet. Over time, these debris have either fallen or fallen back to Earth in a meteorite rain. A dusty ring arc orbits four thousand miles above Earth's equator. The massive continent below is Pangea and the ocean to the west is Panthalassa. This is how the Earth may have appeared during the end of the Permian period, a time just prior to the appearance of the dinosaurs, when continental drift was pulling Pangea apart into the seven continents we know today. 260 million years ago the Earth may have been host to ring arcs similar to the incomplete

Earth at the end of Permian - Ring arcs over the Permian Earth - A ring of rocks and dust is orbiting the Earth. The massive continent below is Pangee and the ocean to the west is Panthalassa. This is what Earth was supposed to look like at the end of Permian, about 260 million years ago, before the first dinosaurs appeared. This ring around the Earth was of earthly origin, constitutes debris thrown into orbit by collision with a meteorite or comet. Over time, these debris have either fallen or fallen back to Earth in a meteorite rain. A dusty ring arc orbits four thousand miles above Earth's equator. The massive continent below is Pangea and the ocean to the west is Panthalassa. This is how the Earth may have appeared during the end of the Permian period, a time just prior to the appearance of the dinosaurs, when continental drift was pulling Pangea apart into the seven continents we know today. 260 million years ago the Earth may have been host to ring arcs similar to the incomplete

Walter B Myers

PIX4633164

Tethys and Titan, Saturn satellites - Tethys and Titan - The Tethys satellite passes behind the Titan satellite. These images were taken 18 minutes apart (the first image taken is on the right) by the Cassini probe on 26 November 2009 at a distance of 1 million km from Titan and 2.2 million km from Tethys. Saturn's moon Tethys with its prominent Odysseus Crater silently slips behind Saturn's largest moon Titan and then emerges on the other side. Tethys is not actually enshrouded in Titan's atmosphere. Tethys (1,062 kilometers, or 660 miles across) is more than twice as far from Cassini than Titan (5,150 kilometers, or 3,200 miles across) in this sequence. Tethys is 2.2 million kilometers (1.4 million miles) from Cassini. Titan is about 1 million kilometers (621,000 miles) away. These two color views were captured about 18 minutes apart, with the view on the right taking place first. These images are part of a mutual event sequence in which one moon passes close to or in front of anothe

Tethys and Titan, Saturn satellites - Tethys and Titan - The Tethys satellite passes behind the Titan satellite. These images were taken 18 minutes apart (the first image taken is on the right) by the Cassini probe on 26 November 2009 at a distance of 1 million km from Titan and 2.2 million km from Tethys. Saturn's moon Tethys with its prominent Odysseus Crater silently slips behind Saturn's largest moon Titan and then emerges on the other side. Tethys is not actually enshrouded in Titan's atmosphere. Tethys (1,062 kilometers, or 660 miles across) is more than twice as far from Cassini than Titan (5,150 kilometers, or 3,200 miles across) in this sequence. Tethys is 2.2 million kilometers (1.4 million miles) from Cassini. Titan is about 1 million kilometers (621,000 miles) away. These two color views were captured about 18 minutes apart, with the view on the right taking place first. These images are part of a mutual event sequence in which one moon passes close to or in front of anothe

PIX4625332

Brown dwarf star Gliese 229 b - Brown dwarf Gliese 229 b - Artist view of the brown dwarf star Gliese 229B. Discovered in 1995 in the constellation Lievre at 18 years - light from Earth, this brown dwarf is 30 to 40 times more massive than Jupiter and is estimated to be 2 to 4 billion years old. Top left is the red dwarf star Gliese 229A. This is how the brown dwarf Gliese 229b might appear from a distance of about a half million miles. Glowing like a charcoal ember, Gliese 229 b was discovered in 1995 and is 19 light years from the Earth. This brown dwarf orbits the red dwarf Gliese 229A in the constellation Lepus. Gliese A can be seen shining dimly on the upper left. These two dwarfs are about four billion miles apart, about the same distance between Pluto and our sun. Gliese 229 b is believed to be 30 to 40 times more massive than the planet Jupiter, which is massive enough for Gliese 229 b to sustain deuterium fusion, but not enough mass to initiate hydrogen fusion like our Sun. As

Brown dwarf star Gliese 229 b - Brown dwarf Gliese 229 b - Artist view of the brown dwarf star Gliese 229B. Discovered in 1995 in the constellation Lievre at 18 years - light from Earth, this brown dwarf is 30 to 40 times more massive than Jupiter and is estimated to be 2 to 4 billion years old. Top left is the red dwarf star Gliese 229A. This is how the brown dwarf Gliese 229b might appear from a distance of about a half million miles. Glowing like a charcoal ember, Gliese 229 b was discovered in 1995 and is 19 light years from the Earth. This brown dwarf orbits the red dwarf Gliese 229A in the constellation Lepus. Gliese A can be seen shining dimly on the upper left. These two dwarfs are about four billion miles apart, about the same distance between Pluto and our sun. Gliese 229 b is believed to be 30 to 40 times more massive than the planet Jupiter, which is massive enough for Gliese 229 b to sustain deuterium fusion, but not enough mass to initiate hydrogen fusion like our Sun. As

Walter B Myers

PIX4572553

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. View of Vega artist on his shooting pitch at the Guyanese Space Center (CSG) in Kourou. Artist view of the new launch pad of ESA's Vega small satellite launcher at the Guyana Space Centre (CSG), Europe's Space Port, in Kourou, French Guiana. The Vega launcher will be operated from the former Ariane Launch Complex n* 1 (ELA-1), which was deactivated in 1989. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega i

The European launch vehicle Vega - Illustration - European Vega Launcher - Illustration - Vega is a European Space Agency (ESA) launcher capable of placing a payload of up to 2 tonnes in low orbit. It is expected that it will join from 2010 the range of launchers of the space agency, which includes launchers Soyuz and Ariane. View of Vega artist on his shooting pitch at the Guyanese Space Center (CSG) in Kourou. Artist view of the new launch pad of ESA's Vega small satellite launcher at the Guyana Space Centre (CSG), Europe's Space Port, in Kourou, French Guiana. The Vega launcher will be operated from the former Ariane Launch Complex n* 1 (ELA-1), which was deactivated in 1989. Under development since 1998, the Vega launcher is an all - solid three - stage vehicle with a liquid - fuelled injection module, based on proven technologies from Ariane 5 booster stages and Fiatavio's Zefiro solid rocket motor. Vega will be marketed and operated by Arianespace, in parallel to Ariane 5. Vega i

PIX4604573

Hubble ultra deep field - In the southern constellation of the furnace, the Hubble space telescope posed 270h to obtain this image of the distant universe. Approximately 10,000 galaxies distant from 5 to 13 billion light years are visible in this image. This view of nearly 10,000 galaxies is the deepest visible - light image of the cosmos. Called the Hubble Ultra Deep Field, this galaxy - studded view represents a “” deep”” core sample of the universe, cutting across billions of light - years. The snapshot includes galaxies of various ages, sizes, shapes, and colors. The smallest, reddest galaxies, about 100, may be among the most distant known, existing when the universe was just 800 million years old. The nearest galaxies - the larger, brighter, well - defined spirals and ellipticals - thrived about 1 billion years ago, when the cosmos was 13 billion years old. In ground - based photographs, the patch of sky in which the galaxies reside (just one - tenth the diameter of the full Moon

Hubble ultra deep field - In the southern constellation of the furnace, the Hubble space telescope posed 270h to obtain this image of the distant universe. Approximately 10,000 galaxies distant from 5 to 13 billion light years are visible in this image. This view of nearly 10,000 galaxies is the deepest visible - light image of the cosmos. Called the Hubble Ultra Deep Field, this galaxy - studded view represents a “” deep”” core sample of the universe, cutting across billions of light - years. The snapshot includes galaxies of various ages, sizes, shapes, and colors. The smallest, reddest galaxies, about 100, may be among the most distant known, existing when the universe was just 800 million years old. The nearest galaxies - the larger, brighter, well - defined spirals and ellipticals - thrived about 1 billion years ago, when the cosmos was 13 billion years old. In ground - based photographs, the patch of sky in which the galaxies reside (just one - tenth the diameter of the full Moon

PIX4613783

European launchers - Illustration - European launch vehicles family in 2009 - Illustration - Artist's view of the various fusees used by the European Space Agency and launches from the Guyanese Space Centre. From left to right, the Vega launcher, Soyuz - ST, Ariane 5 ES ATV and Ariane 5 ECA. Artist view of the family of launchers to be operated on behalf of ESA from the Guiana Space Center, Europe's Spaceport, in Kourou, English Guiana. From left to right: Vega, ESA's new small launcher, is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. Soyuz - ST, the improved version of Russia's Soyuz workhorse launcher with a new digital avionics and a wider, Ariane 4 - type payload fairing. A new launch pad is being built in th

European launchers - Illustration - European launch vehicles family in 2009 - Illustration - Artist's view of the various fusees used by the European Space Agency and launches from the Guyanese Space Centre. From left to right, the Vega launcher, Soyuz - ST, Ariane 5 ES ATV and Ariane 5 ECA. Artist view of the family of launchers to be operated on behalf of ESA from the Guiana Space Center, Europe's Spaceport, in Kourou, English Guiana. From left to right: Vega, ESA's new small launcher, is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. Soyuz - ST, the improved version of Russia's Soyuz workhorse launcher with a new digital avionics and a wider, Ariane 4 - type payload fairing. A new launch pad is being built in th

D. Ducros

PIX4604563

Galaxy AM 0644 - 741 in Flying Fish - Ring galaxy AM 0644 - 741 in Volans - The annular galaxy AM 0644 - 741 is about 300 million years away - light from Earth. A collision with another galaxy causes its ring shape. This ring extends over 150,000 years - light and is composed of recently formed and extremely bright blue stars. Image obtained by the Hubble Space Telescope in January 2004. This galaxy, cataloged as AM 0644 - 741, is a member of the class of so - called “” ring galaxies.”” It lies 300 million light - years away in the direction of the southern constellation Volans. Ring galaxies are an especially striking example of how collisions between galaxies can dramatically change their structure, while also triggering the formation of new stars. In the case of AM 0644 - 741, the galaxy that pierced through the ring galaxy is out of the image but visible in larger - field images. The soft spiral galaxy that is visible to the left of the ring galaxy in the image is a coincidental ba

Galaxy AM 0644 - 741 in Flying Fish - Ring galaxy AM 0644 - 741 in Volans - The annular galaxy AM 0644 - 741 is about 300 million years away - light from Earth. A collision with another galaxy causes its ring shape. This ring extends over 150,000 years - light and is composed of recently formed and extremely bright blue stars. Image obtained by the Hubble Space Telescope in January 2004. This galaxy, cataloged as AM 0644 - 741, is a member of the class of so - called “” ring galaxies.”” It lies 300 million light - years away in the direction of the southern constellation Volans. Ring galaxies are an especially striking example of how collisions between galaxies can dramatically change their structure, while also triggering the formation of new stars. In the case of AM 0644 - 741, the galaxy that pierced through the ring galaxy is out of the image but visible in larger - field images. The soft spiral galaxy that is visible to the left of the ring galaxy in the image is a coincidental ba

PIX4613542

Planet around the star Fomalhaut - Planet orbiting star Fomalhaut - First visible light photo of an extrasolar planet obtained by the space telescope Hubble. The planet called Fomalhaut b, is a planet with a mass close to Jupiter, orbiting the star Fomalhaut, 25 years - light from Earth in the constellation of Southern Fish. The star Fomalhaut (indicated by a white dot) is hidden here to show the dust disc surrounding it and the position of the planet. Located at a distance of about four times that separating Neptune from the Sun, Fomalhaut b makes a complete orbit around its star in 872 years. November 2008 - This image, taken with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, shows the newly discovered planet, Fomalhaut b, orbiting its parent star, Fomalhaut. The small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut that is 34.5 billion kilomete

Planet around the star Fomalhaut - Planet orbiting star Fomalhaut - First visible light photo of an extrasolar planet obtained by the space telescope Hubble. The planet called Fomalhaut b, is a planet with a mass close to Jupiter, orbiting the star Fomalhaut, 25 years - light from Earth in the constellation of Southern Fish. The star Fomalhaut (indicated by a white dot) is hidden here to show the dust disc surrounding it and the position of the planet. Located at a distance of about four times that separating Neptune from the Sun, Fomalhaut b makes a complete orbit around its star in 872 years. November 2008 - This image, taken with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, shows the newly discovered planet, Fomalhaut b, orbiting its parent star, Fomalhaut. The small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut that is 34.5 billion kilomete

PIX4573100

Planet around the star Fomalhaut - Planet orbiting star Fomalhaut - First visible light photo of an extrasolar planet obtained by the space telescope Hubble. The planet called Fomalhaut b, is a planet with a mass close to Jupiter, orbiting the star Fomalhaut, 25 years - light from Earth in the constellation of Southern Fish. The star Fomalhaut (indicated by a white dot) is hidden here to show the dust disc surrounding it and the position of the planet. Located at a distance of about four times that separating Neptune from the Sun, Fomalhaut b makes a complete orbit around its star in 872 years. November 2008 - This image, taken with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, shows the newly discovered planet, Fomalhaut b, orbiting its parent star, Fomalhaut. The small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut that is 34.5 billion kilomete

Planet around the star Fomalhaut - Planet orbiting star Fomalhaut - First visible light photo of an extrasolar planet obtained by the space telescope Hubble. The planet called Fomalhaut b, is a planet with a mass close to Jupiter, orbiting the star Fomalhaut, 25 years - light from Earth in the constellation of Southern Fish. The star Fomalhaut (indicated by a white dot) is hidden here to show the dust disc surrounding it and the position of the planet. Located at a distance of about four times that separating Neptune from the Sun, Fomalhaut b makes a complete orbit around its star in 872 years. November 2008 - This image, taken with the Advanced Camera for Surveys aboard the NASA/ESA Hubble Space Telescope, shows the newly discovered planet, Fomalhaut b, orbiting its parent star, Fomalhaut. The small white box at lower right pinpoints the planet's location. Fomalhaut b has carved a path along the inner edge of a vast, dusty debris ring encircling Fomalhaut that is 34.5 billion kilomete

PIX4573107

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft: The Tethys satellite photographed by the Cassini probe on 11 April 2015 has a distance of 53,000 km from the satellite. Tethys is about 1070 km in diameter. - This enhancement-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. Tethys is tidally locked to Saturn, so the trailing hemisphere is the side of the moon that always faces opposite its direction of motion as it orbits the planet - Images taken using clear, green, infrared and ultraviolet spectral filters were combined to create the view, which highlights subtle color differences across Tethys' surface at wavelengths not visible to human eyes. The moon's surface is fairly uniform in natural color - The color of the surface changes conspicuously across the disk, from yellowish hues to nearly white. These broad color changes are affected by a number of external processes. First, S

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft: The Tethys satellite photographed by the Cassini probe on 11 April 2015 has a distance of 53,000 km from the satellite. Tethys is about 1070 km in diameter. - This enhancement-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. Tethys is tidally locked to Saturn, so the trailing hemisphere is the side of the moon that always faces opposite its direction of motion as it orbits the planet - Images taken using clear, green, infrared and ultraviolet spectral filters were combined to create the view, which highlights subtle color differences across Tethys' surface at wavelengths not visible to human eyes. The moon's surface is fairly uniform in natural color - The color of the surface changes conspicuously across the disk, from yellowish hues to nearly white. These broad color changes are affected by a number of external processes. First, S

PIX4625625

European launchers - Illustration - European launch vehicles family in 2009 - Illustration - Artist's view of the various fusees used by the European Space Agency and launches from the Guyanese Space Centre. From left to right, the Vega launcher, Soyuz - ST, Ariane 5 ES ATV and Ariane 5 ECA. Artist view of the family of launchers to be operated on behalf of ESA from the Guiana Space Center, Europe's Spaceport, in Kourou, English Guiana. From left to right: Vega, ESA's new small launcher, is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. Soyuz - ST, the improved version of Russia's Soyuz workhorse launcher with a new digital avionics and a wider, Ariane 4 - type payload fairing. A new launch pad is being built in th

European launchers - Illustration - European launch vehicles family in 2009 - Illustration - Artist's view of the various fusees used by the European Space Agency and launches from the Guyanese Space Centre. From left to right, the Vega launcher, Soyuz - ST, Ariane 5 ES ATV and Ariane 5 ECA. Artist view of the family of launchers to be operated on behalf of ESA from the Guiana Space Center, Europe's Spaceport, in Kourou, English Guiana. From left to right: Vega, ESA's new small launcher, is designed to loft single or multiple payloads to orbits up to 1,500 km in altitude. Its reference payload capability is about 1,500 kg to a circular 500 - km - high Sun - synchronous orbit but it can also loft satellites from 300 kg to more than 2 metric tons, as well as piggyback microsatellites of less than 100 kg each. Soyuz - ST, the improved version of Russia's Soyuz workhorse launcher with a new digital avionics and a wider, Ariane 4 - type payload fairing. A new launch pad is being built in th

D. Ducros

PIX4604567

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft: The Tethys satellite photographed by the Cassini probe on 11 April 2015 has a distance of 53,000 km from the satellite. Tethys is about 1070 km in diameter. - This enhancement-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. Tethys is tidally locked to Saturn, so the trailing hemisphere is the side of the moon that always faces opposite its direction of motion as it orbits the planet - Images taken using clear, green, infrared and ultraviolet spectral filters were combined to create the view, which highlights subtle color differences across Tethys' surface at wavelengths not visible to human eyes. The moon's surface is fairly uniform in natural color - The color of the surface changes conspicuously across the disk, from yellowish hues to nearly white. These broad color changes are affected by a number of external processes. First, S

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft: The Tethys satellite photographed by the Cassini probe on 11 April 2015 has a distance of 53,000 km from the satellite. Tethys is about 1070 km in diameter. - This enhancement-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. Tethys is tidally locked to Saturn, so the trailing hemisphere is the side of the moon that always faces opposite its direction of motion as it orbits the planet - Images taken using clear, green, infrared and ultraviolet spectral filters were combined to create the view, which highlights subtle color differences across Tethys' surface at wavelengths not visible to human eyes. The moon's surface is fairly uniform in natural color - The color of the surface changes conspicuously across the disk, from yellowish hues to nearly white. These broad color changes are affected by a number of external processes. First, S

PIX4625616

Barree spiral galaxy NGC 2146 in the Giraffe - Barred spiral galaxy NGC 2146 in Camelopardalis - NGC 2146 is a barree spiral galaxy located about 70 million years ago - light from Earth in the constellation Giraffe (Camelopardalis). Image obtained by the Hubble Space Telescope (HST). NGC 2146 is classified as a barred spiral due to its shape, but the most distinctive feature is the dusty spiral arm that has looped in front of the galaxy's core as seen from our perspective. The forces required to pull this structure out of its natural shape and twist it up to 45 degrees are colossal. The most likely explanation is that a neighbouring galaxy is gravitationally perturbing it and distorting the orbits of many of NGC 2146's stars. It is probable that we are currently witnessing the end stages of a process which has been occurring for tens of millions of years. NCG 2146 is undergoing intense bouts of star formation, to such an extent that it is referred to as a starburst galaxy. This is a co

Barree spiral galaxy NGC 2146 in the Giraffe - Barred spiral galaxy NGC 2146 in Camelopardalis - NGC 2146 is a barree spiral galaxy located about 70 million years ago - light from Earth in the constellation Giraffe (Camelopardalis). Image obtained by the Hubble Space Telescope (HST). NGC 2146 is classified as a barred spiral due to its shape, but the most distinctive feature is the dusty spiral arm that has looped in front of the galaxy's core as seen from our perspective. The forces required to pull this structure out of its natural shape and twist it up to 45 degrees are colossal. The most likely explanation is that a neighbouring galaxy is gravitationally perturbing it and distorting the orbits of many of NGC 2146's stars. It is probable that we are currently witnessing the end stages of a process which has been occurring for tens of millions of years. NCG 2146 is undergoing intense bouts of star formation, to such an extent that it is referred to as a starburst galaxy. This is a co

PIX4609999

Brown dwarf star Teide 1 - Brown dwarf Teide 1 - Artist view of the brown dwarf star Teide 1. Discovered in 1995 in the Pleiades cluster, about 55 times the mass of Jupiter, this brown dwarf is represented here in the sky of a young exoplanet lit by the star. This is how Teide 1 might appear from the surface of a hypothetical, March - like planet. Discovered in 1995, Teide 1 is a type of mysterious object called a brown dwarf (failed star or super planet). Bigger than a planet, but smaller than a star, this brown dwarf is about 400 light years from the Earth in the Pleiades star cluster. It is thought that Teide 1 has the mass equivalent of about 55 Jupiters, which is considered large for a brown dwarf. Teide 1 is massive enough, and hence hot enough, to sustain lithium fusion in its core, but is unable to initiate hydrogen fusion like our sun. Teide 1 is probably only about 120 million years old (compared to our sun's age of 4.5 billion years) and shines at a temperature of 4,000o F,

Brown dwarf star Teide 1 - Brown dwarf Teide 1 - Artist view of the brown dwarf star Teide 1. Discovered in 1995 in the Pleiades cluster, about 55 times the mass of Jupiter, this brown dwarf is represented here in the sky of a young exoplanet lit by the star. This is how Teide 1 might appear from the surface of a hypothetical, March - like planet. Discovered in 1995, Teide 1 is a type of mysterious object called a brown dwarf (failed star or super planet). Bigger than a planet, but smaller than a star, this brown dwarf is about 400 light years from the Earth in the Pleiades star cluster. It is thought that Teide 1 has the mass equivalent of about 55 Jupiters, which is considered large for a brown dwarf. Teide 1 is massive enough, and hence hot enough, to sustain lithium fusion in its core, but is unable to initiate hydrogen fusion like our sun. Teide 1 is probably only about 120 million years old (compared to our sun's age of 4.5 billion years) and shines at a temperature of 4,000o F,

Walter B Myers

PIX4572545

Brown dwarf around the red dwarf star Gliese 229 - Brown dwarf around red dwarf Gliese 229 - First false-colored image of a brown dwarf. With a mass of 20 to 50 times that of Jupiter, but of a diameter equivalent to the gas planet, GL229B, is orbiting around the red dwarf star Gliese 229, about 18 years - light from Earth in the constellation Lievre. On the left, the observation made from the ground in adaptive optics at Mount Palomar, October 27, 1994. On the right, the image obtained by the Hubble space telescope on November 17, 1995. These two false - color telescope images reveal the faintest object ever seen around a star beyond our Sun, and the first unambiguous detection of a brown dwarf. The brown dwarf, called GL229B, orbits the red dwarf star Gliese 229, located approximately 18 light - years away in the constellation Lepus. The brown dwarf is about 20 - 50 times the mass of Jupiter, but is so dense it is about the same diameter as Jupiter (80,000 miles). Brown dwarfs are a m

Brown dwarf around the red dwarf star Gliese 229 - Brown dwarf around red dwarf Gliese 229 - First false-colored image of a brown dwarf. With a mass of 20 to 50 times that of Jupiter, but of a diameter equivalent to the gas planet, GL229B, is orbiting around the red dwarf star Gliese 229, about 18 years - light from Earth in the constellation Lievre. On the left, the observation made from the ground in adaptive optics at Mount Palomar, October 27, 1994. On the right, the image obtained by the Hubble space telescope on November 17, 1995. These two false - color telescope images reveal the faintest object ever seen around a star beyond our Sun, and the first unambiguous detection of a brown dwarf. The brown dwarf, called GL229B, orbits the red dwarf star Gliese 229, located approximately 18 light - years away in the constellation Lepus. The brown dwarf is about 20 - 50 times the mass of Jupiter, but is so dense it is about the same diameter as Jupiter (80,000 miles). Brown dwarfs are a m

PIX4572124

Europe - Jupiter Satellite - View of the surface of the Europe satellite obtained from images made by the Galileo probe in 1995 and 1998. Jupiter's icy moon Europa looms large in this newly - reprocessed color view, made from images taken by Nasa's Galileo spacecraft in the late 1990s. This is the color view of Europa from Galileo that shows the largest portion of the moon's surface at the highest resolution. To create this new version, the images were assembled into a realistic color view of the surface that approximates how Europa would appear to the human eye. The scene shows the stunning diversity of Europa's surface geology. Long, linear cracks and ridges crisscross the surface, interrupted by regions of disrupted terrain where the surface ice crust has been broken up and re - frozen into new patterns. Color variations across the surface are associated with differences in geologic feature type and location. For example, areas that appear blue or white contain relatively pure water

Europe - Jupiter Satellite - View of the surface of the Europe satellite obtained from images made by the Galileo probe in 1995 and 1998. Jupiter's icy moon Europa looms large in this newly - reprocessed color view, made from images taken by Nasa's Galileo spacecraft in the late 1990s. This is the color view of Europa from Galileo that shows the largest portion of the moon's surface at the highest resolution. To create this new version, the images were assembled into a realistic color view of the surface that approximates how Europa would appear to the human eye. The scene shows the stunning diversity of Europa's surface geology. Long, linear cracks and ridges crisscross the surface, interrupted by regions of disrupted terrain where the surface ice crust has been broken up and re - frozen into new patterns. Color variations across the surface are associated with differences in geologic feature type and location. For example, areas that appear blue or white contain relatively pure water

PIX4574821

1994 Northridge California earthquake, USA, Part2

1994 Northridge California earthquake, USA, Part2

BOF3281680

The Head and Neck. Sinuses of the Dura Mater, and Two Deep Views of the Orbit

The Head and Neck. Sinuses of the Dura Mater, and Two Deep Views of the Orbit

Ford, G. H. (19th Century)

LLM460068

Manned Space Flight, USA, Mercury/Gemini The ÔMercury SevenÕ astronauts, 1959

Manned Space Flight, USA, Mercury/Gemini The ÔMercury SevenÕ astronauts, 1959

UIS5070711

Space exploration: MPCV module - Artist view - The MPCV spacecraft in space - The Multi-Purpose Crew Vehicle (MPCV) above Earth. This capsule should be able to take a crew of six astronauts to an asteroid, the Moon or to take men to Mars. Here, the vehcule is connected to an additional housing module for a duration of more than three months, as well as to a module for extravehicular outputs. The Multi-Purpose Crew Vehicle (MPCV) is a spacecraft project currently being developed by Lockheed Martin for NASA. Based on specifications and tests already performed for the Orion spacecraft. It was announced by NASA on 24 May 2011. An additional option for the Deep Space Vehicle (DSV) could be a module that attaches to the bow of the Extended Stay Module (ESM) and supports one or more Manned Maneuvering Vehicles (MMVs). An MMV would be a kind of hybrid between a space suit and small spacecraft permitting a single astronaut to maneuver independently of the DSV in the microgravity of orbit, deep

Space exploration: MPCV module - Artist view - The MPCV spacecraft in space - The Multi-Purpose Crew Vehicle (MPCV) above Earth. This capsule should be able to take a crew of six astronauts to an asteroid, the Moon or to take men to Mars. Here, the vehcule is connected to an additional housing module for a duration of more than three months, as well as to a module for extravehicular outputs. The Multi-Purpose Crew Vehicle (MPCV) is a spacecraft project currently being developed by Lockheed Martin for NASA. Based on specifications and tests already performed for the Orion spacecraft. It was announced by NASA on 24 May 2011. An additional option for the Deep Space Vehicle (DSV) could be a module that attaches to the bow of the Extended Stay Module (ESM) and supports one or more Manned Maneuvering Vehicles (MMVs). An MMV would be a kind of hybrid between a space suit and small spacecraft permitting a single astronaut to maneuver independently of the DSV in the microgravity of orbit, deep

Walter B Myers

PIX4639061

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