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Images de 'Nebuleuse Planetaire' médias trouvés, 175

 
Star HD 189733 and nebula planetary Dumbbell (M27) - A star field with HD 189733 and Dumbell nebula - Image centree on the star HD 189733 located 63 years ago - light in the constellation Petite Fox. Astronomers discovered around this star an exoplanet (HD 189733b). This gas planet a little bigger than Jupiter is very close to its star; this type of planet is called hot Jupiter. We detected the presence of mists in his atmosphere. To the right of this star is the planetary nebula Dumbbell (M27) located about 1400 years from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. A star field image showing the star HD 189733 (centre) with Dumbell nebula. Orbiting close to its parent star, is an extrasolar planet, HD 189733b, a 'hot - Jupiter' type of gas giant slightly larger than Jupiter. The observations provide clear evidence of the presence of hazes in its atmosphere. To the right

PIX4623483

Star HD 189733 and nebula planetary Dumbbell (M27) - A star field with HD 189733 and Dumbell nebula - Image centree on the star HD 189733 located 63 years ago - light in the constellation Petite Fox. Astronomers discovered around this star an exoplanet (HD 189733b). This gas planet a little bigger than Jupiter is very close to its star; this type of planet is called hot Jupiter. We detected the presence of mists in his atmosphere. To the right of this star is the planetary nebula Dumbbell (M27) located about 1400 years from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. A star field image showing the star HD 189733 (centre) with Dumbell nebula. Orbiting close to its parent star, is an extrasolar planet, HD 189733b, a 'hot - Jupiter' type of gas giant slightly larger than Jupiter. The observations provide clear evidence of the presence of hazes in its atmosphere. To the right

PIX4623483

 
Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

PIX4623648

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

PIX4623648

 
Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Jerry Lodriguss

PIX4623312

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Jerry Lodriguss

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Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

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Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

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The Helix Nebula (NGC 7293) (photo)

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The Helix Nebula (NGC 7293) (photo)

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Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

PIX4623213

Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

PIX4623213

 
The planetary nebula Dumbbell (M27) is located about 1200 light years from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. In this image the nova appeared on August 18, 2005 is visible. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high-energy, ultraviolet light from the core ionizes the cloud. On the evening of August 17- 18, 2005, two European astronomers simultaneously discovered a new star in the Dumbbell Nebula. This image is a portrait of the Dumbbell Nebula featuring the 2005 nova. It is comprised of thirty separate fifte

R. Jay GaBany

PIX4623431

The planetary nebula Dumbbell (M27) is located about 1200 light years from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. In this image the nova appeared on August 18, 2005 is visible. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high-energy, ultraviolet light from the core ionizes the cloud. On the evening of August 17- 18, 2005, two European astronomers simultaneously discovered a new star in the Dumbbell Nebula. This image is a portrait of the Dumbbell Nebula featuring the 2005 nova. It is comprised of thirty separate fifte

R. Jay GaBany

PIX4623431

 
A planetary Nebula.

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A planetary Nebula.

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Planetary nebula NGC 246 in the Whale - Planetary nebula NGC 246 in Constellation Cetu

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Planetary nebula NGC 246 in the Whale - Planetary nebula NGC 246 in Constellation Cetu

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Planetary nebula PK164+31.1 in Lynx - Planetary nebula PKS164+31.1 in Lyn

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Planetary nebula PK164+31.1 in Lynx - Planetary nebula PKS164+31.1 in Lyn

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Planetary nebula NGC 3242 in Hydra - Planetary nebula NGC 3242 in Hydr

Adam Block

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Planetary nebula NGC 3242 in Hydra - Planetary nebula NGC 3242 in Hydr

Adam Block

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Planetary nebula NGC 7008 in Swan - Planetary nebula NGC 7008 in Cygnu

Adam Block

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Planetary nebula NGC 7008 in Swan - Planetary nebula NGC 7008 in Cygnu

Adam Block

PIX4623544

 
Planetary nebula NGC 2346 in Unicorn - The planetary nebula NGC 2346 - This nebula is located about 2000 years - light from Earth. A binary star resides in its center. Image obtained by the 3.9m telescope of Siding Spring NGC 2346 is a fine bipolar planetary nebula which is on the celestial equator in the constellation of Monoceros. It is bright and conspicuous and has been extensively studied. Among its most remarkable characteristics is its unusually cool central star, which is a 'spectroscopic binary'. The two components are identified by the effect of their movement around each other on the lines of their spectrum. The double star, which has a period of about 16 days, is also variable, probably due to dust in orbit around it. The dust itself is heated by the central star and so NGC 2346 is unusually bright in the infrared part of the spectrum

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Planetary nebula NGC 2346 in Unicorn - The planetary nebula NGC 2346 - This nebula is located about 2000 years - light from Earth. A binary star resides in its center. Image obtained by the 3.9m telescope of Siding Spring NGC 2346 is a fine bipolar planetary nebula which is on the celestial equator in the constellation of Monoceros. It is bright and conspicuous and has been extensively studied. Among its most remarkable characteristics is its unusually cool central star, which is a 'spectroscopic binary'. The two components are identified by the effect of their movement around each other on the lines of their spectrum. The double star, which has a period of about 16 days, is also variable, probably due to dust in orbit around it. The dust itself is heated by the central star and so NGC 2346 is unusually bright in the infrared part of the spectrum

PIX4622952

 
Planetary nebula NGC 5189 in the Fly - NGC 5189, a weird planetary nebula - This nebula is located about 3000 years from Earth in the southern constellation of Fly. Image obtained from the 3.9m telescope of Siding Spring The peculiarity of NGC 5189 lies in its astonishingly complex structure, first noted by Sir John Herschel, who discovered it in 1835. Seen through the telescope it seems to have an 'S' shape, reminiscent of a barred spiral galaxy, hence its popular name. This is seen in the colour photograph as the central greenish part. Deep photographs such as this show many filaments, rather more reminiscent of the Crab nebula, a supernova remnant, than a planetary nebula. Unlike the Crab nebula, NGC 5189 is remarkably symmetrical. Distances to planetary nebulae are notoriously difficult to measure, but this one is estimated to be about 3000 light years away

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Planetary nebula NGC 5189 in the Fly - NGC 5189, a weird planetary nebula - This nebula is located about 3000 years from Earth in the southern constellation of Fly. Image obtained from the 3.9m telescope of Siding Spring The peculiarity of NGC 5189 lies in its astonishingly complex structure, first noted by Sir John Herschel, who discovered it in 1835. Seen through the telescope it seems to have an 'S' shape, reminiscent of a barred spiral galaxy, hence its popular name. This is seen in the colour photograph as the central greenish part. Deep photographs such as this show many filaments, rather more reminiscent of the Crab nebula, a supernova remnant, than a planetary nebula. Unlike the Crab nebula, NGC 5189 is remarkably symmetrical. Distances to planetary nebulae are notoriously difficult to measure, but this one is estimated to be about 3000 light years away

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Planetary nebula Abell 39 in Hercules - Planetary nebula Abell 39 - Abell 39, is a planetary nebula located about 7000 light years away from Earth in the constellation Hercules. Its diameter is 5 years - light. A planetary nebula is a shell of gas from a small star similar to our Sun that came at the end of its life, whose heart collapsed to become a white dwarf and which expelled the outer layers of its matter. Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. The nebula has a diameter of about five light - years, and the thickness of the spherical shell is about a third of a light - year. The nebula itself is roughly 7,000 light - years from Earth in the constellation Hercules

Adam Block

PIX4623807

Planetary nebula Abell 39 in Hercules - Planetary nebula Abell 39 - Abell 39, is a planetary nebula located about 7000 light years away from Earth in the constellation Hercules. Its diameter is 5 years - light. A planetary nebula is a shell of gas from a small star similar to our Sun that came at the end of its life, whose heart collapsed to become a white dwarf and which expelled the outer layers of its matter. Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. The nebula has a diameter of about five light - years, and the thickness of the spherical shell is about a third of a light - year. The nebula itself is roughly 7,000 light - years from Earth in the constellation Hercules

Adam Block

PIX4623807

 
Planetary nebula NGC 6781 - A planetary nebula, NGC 6781 - This fairly inconspicuous planetary nebula is in Aquila and it marks the end of the long life of a sun - like star. Despite the longevity of their parent stars and the very brief lifetime of the nebula (typically less than 100,000 years) such sights are common because sun - like stars are common. The nebula has nothing to do with planet formation, indeed the formation of the nebula would effectively destroy any planets the parent star had, rather the name refers to the telescopic appearance of the nebula. Some planetaries are very bright and their discs look like solar system planets. A close look at this picture shows some structure in the expanding shell of gas around the star, reminiscent of the much more complex Helix nebula. The nebula we see is the ejected surface of the star expanding into material left from an earlier stage in its decline, when it briefly expanded as a 'red giant'. Irregularities in the earlier ejecta,

PIX4623396

Planetary nebula NGC 6781 - A planetary nebula, NGC 6781 - This fairly inconspicuous planetary nebula is in Aquila and it marks the end of the long life of a sun - like star. Despite the longevity of their parent stars and the very brief lifetime of the nebula (typically less than 100,000 years) such sights are common because sun - like stars are common. The nebula has nothing to do with planet formation, indeed the formation of the nebula would effectively destroy any planets the parent star had, rather the name refers to the telescopic appearance of the nebula. Some planetaries are very bright and their discs look like solar system planets. A close look at this picture shows some structure in the expanding shell of gas around the star, reminiscent of the much more complex Helix nebula. The nebula we see is the ejected surface of the star expanding into material left from an earlier stage in its decline, when it briefly expanded as a 'red giant'. Irregularities in the earlier ejecta,

PIX4623396

 
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

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

 
Planetary Nebula of the Red Rectangle in the Unicorn - The Red Rectangle, AFGL 915 - This planetary nebula is located about 2300 years ago - light. Image from Siding Spring 3.9m Telescope This surprising object is one of an unusual class of nebulae surrounding mature, sun - like stars that are about to turn into planetary nebulae. Not all pre - planetary nebulae have outbursts like this, and in those that do, the nebula lasts only a few thousand years, hence the rarity. The central star has a thick belt of dust like a girdle around its equator which restricts outflow in that direction. Instead, the star ejects material in a kind of cone from each of its poles. The spectrum of the nebula shows unusual, strong red lines from hydrogen bonded to grains of carbon, however there is sufficient light reflected from the embedded star to dilute the strong red spectrum to the deep yellow we see here

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Planetary Nebula of the Red Rectangle in the Unicorn - The Red Rectangle, AFGL 915 - This planetary nebula is located about 2300 years ago - light. Image from Siding Spring 3.9m Telescope This surprising object is one of an unusual class of nebulae surrounding mature, sun - like stars that are about to turn into planetary nebulae. Not all pre - planetary nebulae have outbursts like this, and in those that do, the nebula lasts only a few thousand years, hence the rarity. The central star has a thick belt of dust like a girdle around its equator which restricts outflow in that direction. Instead, the star ejects material in a kind of cone from each of its poles. The spectrum of the nebula shows unusual, strong red lines from hydrogen bonded to grains of carbon, however there is sufficient light reflected from the embedded star to dilute the strong red spectrum to the deep yellow we see here

PIX4623779

 
Planetary nebula NGC 3242 ultraviolet view - Planetary nebula NGC 3242 seen in ultraviolet - The planetary nebula NGC 3242, also called the ghost of Jupiter, ultraviolet view by the GALEX satellite. NGC 3242 is located between 1400 and 2500 years - light of the Earth, in the constellation Hydra (hydra, or female hydra). This ultraviolet image from NASA's Galaxy Evolution Explorer (GALEX) shows NGC 3242, a planetary nebula frequently referred to as “” Jupiter's Ghost.””” When stars with a mass similar to our sun approach the end of their lives by exhausting supplies of hydrogen and helium fuel in their cores, they swell up into cool red - giant stars. In a last gasp before death, they expel the layers of gas in their outer atmosphere. This exposes the core of the dying star, a dense hot ball of carbon and oxygen called a white dwarf. The white dwarf is so hot that it shines very brightly in the ultraviolet. The ultraviolet light from the white dwarf, in turn, ionizes the gaseous materia

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Planetary nebula NGC 3242 ultraviolet view - Planetary nebula NGC 3242 seen in ultraviolet - The planetary nebula NGC 3242, also called the ghost of Jupiter, ultraviolet view by the GALEX satellite. NGC 3242 is located between 1400 and 2500 years - light of the Earth, in the constellation Hydra (hydra, or female hydra). This ultraviolet image from NASA's Galaxy Evolution Explorer (GALEX) shows NGC 3242, a planetary nebula frequently referred to as “” Jupiter's Ghost.””” When stars with a mass similar to our sun approach the end of their lives by exhausting supplies of hydrogen and helium fuel in their cores, they swell up into cool red - giant stars. In a last gasp before death, they expel the layers of gas in their outer atmosphere. This exposes the core of the dying star, a dense hot ball of carbon and oxygen called a white dwarf. The white dwarf is so hot that it shines very brightly in the ultraviolet. The ultraviolet light from the white dwarf, in turn, ionizes the gaseous materia

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - The planetary nebula of Helice, located in Aquarius, is one of the closest to Earth (about 690 years - light) and is also one of the most extended; its apparent diameter is about half of the full moon. Image made with the 1.5m Danish telescope of La Silla in Chile in 2009. Helix is our closest planetary nebula at about 690 light years distance. Image taken with the ESO/Danish 1.5m telescope at La Silla observatory in Chile

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - The planetary nebula of Helice, located in Aquarius, is one of the closest to Earth (about 690 years - light) and is also one of the most extended; its apparent diameter is about half of the full moon. Image made with the 1.5m Danish telescope of La Silla in Chile in 2009. Helix is our closest planetary nebula at about 690 light years distance. Image taken with the ESO/Danish 1.5m telescope at La Silla observatory in Chile

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Planetary nebula Shapley 1 in the Rule - The planetary nebula Shapley 1 - This planetary nebula is located about 1000 years ago - light. Image obtained from the 3.9m telescope of Siding Spring This is an unusual annular planetary nebula in Norma. The nebula itself appears quite small at a little over an arc minute in diameter, while its central star is a magnitude 14 white dwarf. This object is unusual because those planetaries that are not bipolar are more or less spherical shells of material thrown off by the central star as it undergoes an internal rearrangement. We often see them as thick annuli because we look through a greater thickness at the edge of the shell. However, Shapley 1 seems to be a true torus, a doughnut - shaped ring of material that we happen to see face - on around the central star. Sp - 1 is about 1000 light years distant

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Planetary nebula Shapley 1 in the Rule - The planetary nebula Shapley 1 - This planetary nebula is located about 1000 years ago - light. Image obtained from the 3.9m telescope of Siding Spring This is an unusual annular planetary nebula in Norma. The nebula itself appears quite small at a little over an arc minute in diameter, while its central star is a magnitude 14 white dwarf. This object is unusual because those planetaries that are not bipolar are more or less spherical shells of material thrown off by the central star as it undergoes an internal rearrangement. We often see them as thick annuli because we look through a greater thickness at the edge of the shell. However, Shapley 1 seems to be a true torus, a doughnut - shaped ring of material that we happen to see face - on around the central star. Sp - 1 is about 1000 light years distant

PIX4623906

 
Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

R. Jay GaBany

PIX4623639

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

R. Jay GaBany

PIX4623639

 
Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Planetary nebula NGC 2899 dans les Voiles - A distorted planetary nebula, NGC 2899 - This nebula is located about 3000 years from Earth. Image obtained by the 3.9m telescope of Siding Spring Planetary nebulae present a wide variety of forms on the sky, partly because of the random orientation of their parent stars but also because the nebulae themselves can have quite different intrinsic shapes. Theories about the shapes of planetaries range from the influence of binary companions to the central star to the distribution of material around the stars during its red giant phase, before the final outburst. Whatever the mechanism, most planetaries are symmetrical about one or more axes and only rarely do they appear curved like NGC 2899. A possible explanation is that the star from which the nebula was ejected had a large proper motion through space. The resulting nebula has the same velocity but vastly lower density than the star so is distorted by its encounter with the tenuous interstell

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Planetary nebula NGC 2899 dans les Voiles - A distorted planetary nebula, NGC 2899 - This nebula is located about 3000 years from Earth. Image obtained by the 3.9m telescope of Siding Spring Planetary nebulae present a wide variety of forms on the sky, partly because of the random orientation of their parent stars but also because the nebulae themselves can have quite different intrinsic shapes. Theories about the shapes of planetaries range from the influence of binary companions to the central star to the distribution of material around the stars during its red giant phase, before the final outburst. Whatever the mechanism, most planetaries are symmetrical about one or more axes and only rarely do they appear curved like NGC 2899. A possible explanation is that the star from which the nebula was ejected had a large proper motion through space. The resulting nebula has the same velocity but vastly lower density than the star so is distorted by its encounter with the tenuous interstell

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen. The smallest of the radial blobs inside the red shell are about 150 astronomical units across (150 times the Earth - Sun distance) and they give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Planetary nebula NGC 1360 in the Furnace - NGC 1360, the diffuse planetary nebula in Fornax - Image obtained by Siding Spring Planetary nebulae 3.9m telescope usually have well - defined boundaries, sometimes even a shell - like structure. For reasons that are not understood, NGC 1360 defies all these conventions, yet its colour still clearly identifies it as a planetary nebula. The green hue is oxygen, excited by the hot central star, and to the north - east of the nebula is a faint red smudge, probably traces of material ejected before the star became a true planetary nebula

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Planetary nebula NGC 1360 in the Furnace - NGC 1360, the diffuse planetary nebula in Fornax - Image obtained by Siding Spring Planetary nebulae 3.9m telescope usually have well - defined boundaries, sometimes even a shell - like structure. For reasons that are not understood, NGC 1360 defies all these conventions, yet its colour still clearly identifies it as a planetary nebula. The green hue is oxygen, excited by the hot central star, and to the north - east of the nebula is a faint red smudge, probably traces of material ejected before the star became a true planetary nebula

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. This picture was made without unsharp masking. Unsharp masking emphasises the smallest of the radial blobs inside the red shell, which are about 150 astronomical units across (150 times the Earth - Sun distance). These radial streaks give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. This picture was made without unsharp masking. Unsharp masking emphasises the smallest of the radial blobs inside the red shell, which are about 150 astronomical units across (150 times the Earth - Sun distance). These radial streaks give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

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Butterfly shape emerges from Stellar Demise in Planetary Nebula NGC 6302, 2009

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Butterfly shape emerges from Stellar Demise in Planetary Nebula NGC 6302, 2009

UIG1580022

 
A planetary Nebula.

UIG5307609

A planetary Nebula.

UIG5307609

 
Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 50 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC 6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud

R. Jay GaBany

PIX4623523

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 50 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC 6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud

R. Jay GaBany

PIX4623523

 
Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 90 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud

PIX4623489

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 90 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud

PIX4623489

 
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

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

 
Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Sebastian Voltmer

PIX4623321

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Sebastian Voltmer

PIX4623321

 
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 Hubble Space Telescope (HST). The colors used in this image correspond to the emissions of different gases: sulfur in green, hydrogen in orange and oxygen in blue. Hubble Space Telescope have photographed a festive - looking nearby planetary nebula called NGC 5189. Planetary nebulae represent the final brief stage in the life of a medium - sized star like our Sun. While consuming the last of the fuel in its core, the dying star expels a large portion of its outer envelope. This material then becomes heated by the radiation from the stellar remnant and radiates, producing glowing clouds of gas that can show complex structures, as the ejection of mass from the star is uneven in both time and direction. This image was taken with Hubble's Wide Field Camera 3 on October 8, 2012, in filters tuned to

PIX4623125

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 Hubble Space Telescope (HST). The colors used in this image correspond to the emissions of different gases: sulfur in green, hydrogen in orange and oxygen in blue. Hubble Space Telescope have photographed a festive - looking nearby planetary nebula called NGC 5189. Planetary nebulae represent the final brief stage in the life of a medium - sized star like our Sun. While consuming the last of the fuel in its core, the dying star expels a large portion of its outer envelope. This material then becomes heated by the radiation from the stellar remnant and radiates, producing glowing clouds of gas that can show complex structures, as the ejection of mass from the star is uneven in both time and direction. This image was taken with Hubble's Wide Field Camera 3 on October 8, 2012, in filters tuned to

PIX4623125

 
Planetary nebula ESO 166 - 21 dans les Voiles - The faint planetary nebula ESO 166 - 21 - This planetary nebula was discovered in the rich southern constellation of Vela in 1966, which is why it does not have an NGC number. The 'Ack' designation refers to its identification in the catalogue of planetary nebulae edited by Agnes Acker. This beautifully structured delicate sphere of glowing gas is about 2 arc minutes in diameter and is extremely faint. Both these characteristics have contributed to the conspicuous grain 'noise' in the photograph, and attempts to emphasise the faint nebulosity also bring out the many faint stars in this direction, including the markedly blue central star of visual magnitude 18 which is seen here sandwiched between two other, brighter stars

PIX4623916

Planetary nebula ESO 166 - 21 dans les Voiles - The faint planetary nebula ESO 166 - 21 - This planetary nebula was discovered in the rich southern constellation of Vela in 1966, which is why it does not have an NGC number. The 'Ack' designation refers to its identification in the catalogue of planetary nebulae edited by Agnes Acker. This beautifully structured delicate sphere of glowing gas is about 2 arc minutes in diameter and is extremely faint. Both these characteristics have contributed to the conspicuous grain 'noise' in the photograph, and attempts to emphasise the faint nebulosity also bring out the many faint stars in this direction, including the markedly blue central star of visual magnitude 18 which is seen here sandwiched between two other, brighter stars

PIX4623916

 
Planetary nebula NGC 6302 in Scorpio - Planetary nebula NGC 6302 in Scorpius - NGC 6302 is a planetary nebula located about 4000 years from Earth. In the center of the nebula, an extremely hot dying star. Image obtained by the Hubble Space Telescope with the new WFC 3 (Wide Field Camera 3) camera, July 27, 2009. A dying star that was once about five times the mass of the Sun is at the center of this nebula. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet radiation that is making the cast - off material glow. This object is an example of a planetary nebula, so - named because many of them have a round appearance resembling that of a planet when viewed through a small telescope. The Wide Field Camera 3 (WFC3), a new camera aboard Nasa's Hubble Space Telescope, snapped this image of the planetary nebula, catalogued as NGC 6302, but more popularly called the Bug Nebula or the Butterfly Nebula. WFC3 was installed by NASA astronauts in May 2009, during the

PIX4623200

Planetary nebula NGC 6302 in Scorpio - Planetary nebula NGC 6302 in Scorpius - NGC 6302 is a planetary nebula located about 4000 years from Earth. In the center of the nebula, an extremely hot dying star. Image obtained by the Hubble Space Telescope with the new WFC 3 (Wide Field Camera 3) camera, July 27, 2009. A dying star that was once about five times the mass of the Sun is at the center of this nebula. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet radiation that is making the cast - off material glow. This object is an example of a planetary nebula, so - named because many of them have a round appearance resembling that of a planet when viewed through a small telescope. The Wide Field Camera 3 (WFC3), a new camera aboard Nasa's Hubble Space Telescope, snapped this image of the planetary nebula, catalogued as NGC 6302, but more popularly called the Bug Nebula or the Butterfly Nebula. WFC3 was installed by NASA astronauts in May 2009, during the

PIX4623200

 
Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope (HST). The Hubble Space Telescope has captured the sharpest view yet of M57, the Ring Nebula in Lyra, which is the most famous of all planetary nebulae. In this image, the telescope has looked down a tunnel of gas cast off by a dying star thousands of years ago. This photo reveals elongated dark clumps of material embedded in the gas at the edge of the nebula, and the dying central star floating in a blue haze of hot gas. The nebula is about a light - year in diameter, and is located some 2,000 light - years from Earth in the direction of the constellation Lyra

R. Gendler

PIX4623330

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope (HST). The Hubble Space Telescope has captured the sharpest view yet of M57, the Ring Nebula in Lyra, which is the most famous of all planetary nebulae. In this image, the telescope has looked down a tunnel of gas cast off by a dying star thousands of years ago. This photo reveals elongated dark clumps of material embedded in the gas at the edge of the nebula, and the dying central star floating in a blue haze of hot gas. The nebula is about a light - year in diameter, and is located some 2,000 light - years from Earth in the direction of the constellation Lyra

R. Gendler

PIX4623330

 
Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope. This close - up, visible - light view by Nasa's Hubble Space Telescope reveals new details of the Ring Nebula. The object is tilted towards Earth so that astronomers see the ring face - on. The Hubble observations reveal that the nebula's shape is more complicated than astronomers thought. The blue gas in the nebula's center is actually a football - shaped structure that pierces the red doughnut - shaped material. Hubble also uncovers the detailed structure of the dark, irregular knots of dense gas embedded along the inner rim of the ring. The knots look like spokes in a bicycle. The Hubble images have allowed the research team to match u

PIX4623343

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope. This close - up, visible - light view by Nasa's Hubble Space Telescope reveals new details of the Ring Nebula. The object is tilted towards Earth so that astronomers see the ring face - on. The Hubble observations reveal that the nebula's shape is more complicated than astronomers thought. The blue gas in the nebula's center is actually a football - shaped structure that pierces the red doughnut - shaped material. Hubble also uncovers the detailed structure of the dark, irregular knots of dense gas embedded along the inner rim of the ring. The knots look like spokes in a bicycle. The Hubble images have allowed the research team to match u

PIX4623343

 
Old open cluster NGC 2818 and planetary nebula NGC 2818A - Old Open cluster NGC 2818 and planetary nebula in Pyxis - The open cluster NGC 2818 in the southern constellation of the Compsole is distinguished by the fact that most of its bright stars have already become supernovae; this indicates that this cluster must be very old, perhaps a billion years. It has a planetary nebula, NGC 2818A, a star at the end of life. These objects are located approximately 10,000 light years away from Earth. The open cluster NGC 2818 is not very conspicuous because most of the brilliant, massive stars that normally distinguish such groupings have vanished as supernovae, indicating that the cluster is quite mature. The massive stars dominating the scene in young clusters leaving the fainter, long - lived stars behind. Eventually, they too come to the end of their lives, throwing off their outer layers as planetary nebulae. This one, identified as NGC 2818A, is particularly graceful, and its existence su

PIX4622981

Old open cluster NGC 2818 and planetary nebula NGC 2818A - Old Open cluster NGC 2818 and planetary nebula in Pyxis - The open cluster NGC 2818 in the southern constellation of the Compsole is distinguished by the fact that most of its bright stars have already become supernovae; this indicates that this cluster must be very old, perhaps a billion years. It has a planetary nebula, NGC 2818A, a star at the end of life. These objects are located approximately 10,000 light years away from Earth. The open cluster NGC 2818 is not very conspicuous because most of the brilliant, massive stars that normally distinguish such groupings have vanished as supernovae, indicating that the cluster is quite mature. The massive stars dominating the scene in young clusters leaving the fainter, long - lived stars behind. Eventually, they too come to the end of their lives, throwing off their outer layers as planetary nebulae. This one, identified as NGC 2818A, is particularly graceful, and its existence su

PIX4622981

 
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Astronomy - Illustration - Astronomy - Artwork - Artist's view evoking astronomy. Artistic view illustrating the astronomy

Bergeron, Joe

PIX4650378

Astronomy - Illustration - Astronomy - Artwork - Artist's view evoking astronomy. Artistic view illustrating the astronomy

Bergeron, Joe

PIX4650378

 
Planetary nebula NGC 6543 in the Dragon - Planetary nebula NGC 6543 in Draco - Composite view of the planetary nebula NGC 6543 in the Dragon obtained by the Hubble space telescope and X-ray (blue) by the Chandra satellite. NGC 6543 is located about 3000 years of light from Earth. This composite of data from Nasa's Chandra X - ray Observatory and Hubble Space Telescope is a new look for NGC 6543, better known as the Cat's Eye nebula. This famous object is a so - called planetary nebula that represents a phase of stellar evolution that the Sun should experience several billion years from now. When a star like the Sun begins to run out of fuel, it becomes what is known as a red giant. In this phase, a star sheds some of its outer layers, eventually leaving behind a hot core that collapses to form a dense white dwarf star. A fast wind emanating from the hot core rams into the ejected atmosphere, pushes it outward, and creates the graceful filamentary structures seen with optical telescopes

PIX4623257

Planetary nebula NGC 6543 in the Dragon - Planetary nebula NGC 6543 in Draco - Composite view of the planetary nebula NGC 6543 in the Dragon obtained by the Hubble space telescope and X-ray (blue) by the Chandra satellite. NGC 6543 is located about 3000 years of light from Earth. This composite of data from Nasa's Chandra X - ray Observatory and Hubble Space Telescope is a new look for NGC 6543, better known as the Cat's Eye nebula. This famous object is a so - called planetary nebula that represents a phase of stellar evolution that the Sun should experience several billion years from now. When a star like the Sun begins to run out of fuel, it becomes what is known as a red giant. In this phase, a star sheds some of its outer layers, eventually leaving behind a hot core that collapses to form a dense white dwarf star. A fast wind emanating from the hot core rams into the ejected atmosphere, pushes it outward, and creates the graceful filamentary structures seen with optical telescopes

PIX4623257

 
Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Composite image obtained with a 90 cm telescope, and the Hubble and Subaru telescopes. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud. Image Composite

PIX4623530

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Composite image obtained with a 90 cm telescope, and the Hubble and Subaru telescopes. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud. Image Composite

PIX4623530

 
Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 (right) does not seem to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC2437) is a rich open star cluster in the constellation Puppis. Within a diameter of 28 arc minutes, or about 30 light - years at its distance of 5400 light - years, M46 contains over 150 bright stars and a total population perhaps over 500. M46 is probably around 300 million years old. It is also noteworthy for the presence of the planetary nebula NGC 2438 on its northern edge (right of center). NGC 2438 is almost certainly not physically associated with M46 due to is probable evolutionary history, its significantly diffferent velocity, and a distance estimate only a little more than half the distan

R. Gendler

PIX4568046

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 (right) does not seem to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC2437) is a rich open star cluster in the constellation Puppis. Within a diameter of 28 arc minutes, or about 30 light - years at its distance of 5400 light - years, M46 contains over 150 bright stars and a total population perhaps over 500. M46 is probably around 300 million years old. It is also noteworthy for the presence of the planetary nebula NGC 2438 on its northern edge (right of center). NGC 2438 is almost certainly not physically associated with M46 due to is probable evolutionary history, its significantly diffferent velocity, and a distance estimate only a little more than half the distan

R. Gendler

PIX4568046

 
Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is a rich open star cluster in the constellation Puppis. Within a diameter of 28 arc minutes, or about 30 light - years at its distance of 5400 light - years, M46 contains over 150 bright stars and a total population perhaps over 500. M46 is probably around 300 million years old. The planetary nebula NGC 2438 is almost certainly not physically associated with M46 due to is probable evolutionary history, its significantly diffferent velocity, and a distance estimate only a little more than half the distance to M46. This skyview is corresponding to binoculars and small telescopes

PIX4568085

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is a rich open star cluster in the constellation Puppis. Within a diameter of 28 arc minutes, or about 30 light - years at its distance of 5400 light - years, M46 contains over 150 bright stars and a total population perhaps over 500. M46 is probably around 300 million years old. The planetary nebula NGC 2438 is almost certainly not physically associated with M46 due to is probable evolutionary history, its significantly diffferent velocity, and a distance estimate only a little more than half the distance to M46. This skyview is corresponding to binoculars and small telescopes

PIX4568085

 
Star cluster M46 and planetary nebula NGC 2438 in the stern Open cluster M46 with Planetary Nebula NGC 2438 in Puppis - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (middle bottom) doesn't seem to belong to the cluster

PIX4568034

Star cluster M46 and planetary nebula NGC 2438 in the stern Open cluster M46 with Planetary Nebula NGC 2438 in Puppis - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (middle bottom) doesn't seem to belong to the cluster

PIX4568034

 
Planetary nebula M57 (NGC 6720) in Lyra - M57 (NGC 6720) planetary nebula in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Composite image obtained by different telescopes. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Planetary nebula are shells of gas shed by stars late in their life cycles after using up all of their nuclear fuel. The star then ejects a significant portion of its mass in a gaseous shell, which is illuminated by its extremely

PIX4623359

Planetary nebula M57 (NGC 6720) in Lyra - M57 (NGC 6720) planetary nebula in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Composite image obtained by different telescopes. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Planetary nebula are shells of gas shed by stars late in their life cycles after using up all of their nuclear fuel. The star then ejects a significant portion of its mass in a gaseous shell, which is illuminated by its extremely

PIX4623359

 
M46 star cluster and planetary nebula NGC 2438 in the stern - Open Cluster M46 and Planetary Nebula NGC 2438 - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 is a rich open cluster that contains a real jewel, planetary nebula NGC 2438. At 6th magnitude, M46 contains about 100 bright stars, the brightest of which is magnitude 8.7. It is about one - half degree in apparent diameter, the same size as the full moon. It is estimated to be about 300 million years old. Planetary nebula NGC 2438 is about one arc minute in diameter and shines at 10th magnitude. A planetary nebula is a shell of gas puffed off by a star late in its life cycle. Three bright stars are visible inside of the nebula, although none of them are the true central star which shed the gas. T

Jerry Lodriguss

PIX4568057

M46 star cluster and planetary nebula NGC 2438 in the stern - Open Cluster M46 and Planetary Nebula NGC 2438 - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 is a rich open cluster that contains a real jewel, planetary nebula NGC 2438. At 6th magnitude, M46 contains about 100 bright stars, the brightest of which is magnitude 8.7. It is about one - half degree in apparent diameter, the same size as the full moon. It is estimated to be about 300 million years old. Planetary nebula NGC 2438 is about one arc minute in diameter and shines at 10th magnitude. A planetary nebula is a shell of gas puffed off by a star late in its life cycle. Three bright stars are visible inside of the nebula, although none of them are the true central star which shed the gas. T

Jerry Lodriguss

PIX4568057

 
Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (top) doesn't seem to belong to the cluster

Jim Misti

PIX4568059

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (top) doesn't seem to belong to the cluster

Jim Misti

PIX4568059

 
Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope and the Large Binocular Telescope. In this composite image, visible - light observations by Nasa's Hubble Space Telescope are combined with infrared data from the ground - based Large Binocular Telescope in Arizona to assemble a dramatic view of the well - known Ring Nebula. Called a planetary nebula, the Ring Nebula is the glowing remains of a Sun - like star. The object is tilted towards Earth so that astronomers see the ring face - on. The Hubble observations reveal that the nebula's shape is more complicated than astronomers thought. The blue gas in the nebula's center is actually a football - shaped structure that pierces the red doug

PIX4623411

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula M57 in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained by the Hubble Space Telescope and the Large Binocular Telescope. In this composite image, visible - light observations by Nasa's Hubble Space Telescope are combined with infrared data from the ground - based Large Binocular Telescope in Arizona to assemble a dramatic view of the well - known Ring Nebula. Called a planetary nebula, the Ring Nebula is the glowing remains of a Sun - like star. The object is tilted towards Earth so that astronomers see the ring face - on. The Hubble observations reveal that the nebula's shape is more complicated than astronomers thought. The blue gas in the nebula's center is actually a football - shaped structure that pierces the red doug

PIX4623411

 
The evolution of the Sun - Illustration - The evolution of the Sun - Illustration - Artist's view of the evolution of a yellow star, such as the Sun

P. Carril

PIX4573041

The evolution of the Sun - Illustration - The evolution of the Sun - Illustration - Artist's view of the evolution of a yellow star, such as the Sun

P. Carril

PIX4573041

 
Star clusters M46 and M47 and planetary nebula NGC 2438 in stern - Open clusters M46 and M47 - M46 (NGC 2437) and M47 (NGC 2422), are two open clusters located in the constellation Stern. M46, which contains the planetary nebula NGC 2438, is on the left, M47, on the right. M46 and M47 are two interesting open clusters that lie a little more than 1 degree apart in the sky in the constellation of Pupis. M46, containing planetary nebula NGC 2438, is seen at left in this photo, and M47 is at right. M47 is a bright cluster that can be seen with the unaided eye under dark skies. It is comprised of about 30 stars, and is 30 arc minutes in diameter and has an overall brightness of 4.4 magnitude

Jerry Lodriguss

PIX4568051

Star clusters M46 and M47 and planetary nebula NGC 2438 in stern - Open clusters M46 and M47 - M46 (NGC 2437) and M47 (NGC 2422), are two open clusters located in the constellation Stern. M46, which contains the planetary nebula NGC 2438, is on the left, M47, on the right. M46 and M47 are two interesting open clusters that lie a little more than 1 degree apart in the sky in the constellation of Pupis. M46, containing planetary nebula NGC 2438, is seen at left in this photo, and M47 is at right. M47 is a bright cluster that can be seen with the unaided eye under dark skies. It is comprised of about 30 stars, and is 30 arc minutes in diameter and has an overall brightness of 4.4 magnitude

Jerry Lodriguss

PIX4568051

 
The evolution of the Sun - Illustration - The evolution of the Sun - Illustration - Artist's view of the evolution of a yellow star like the Solei

P. Carril

PIX4573035

The evolution of the Sun - Illustration - The evolution of the Sun - Illustration - Artist's view of the evolution of a yellow star like the Solei

P. Carril

PIX4573035

 
Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. Image obtained by Siding Spring's 3.9m telescope The open cluster NGC 2437 (M46) has an angular diameter of almost half a degree and is quite beautiful in even quite a modest telescope. It has an integrated magnitude of about 6 and so is on the threshold of naked - eye visibility. The cluster is quite old as these things go, about 300 million light years. It is about 5000 light years distant, in the northern part of the constellation of Puppis. Although planetary nebula distances are notoriously difficult to measure, NGC 2438 seems to be in the foreground and is not connected to the cluster. Planetaries are in an

PIX4568052

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. Image obtained by Siding Spring's 3.9m telescope The open cluster NGC 2437 (M46) has an angular diameter of almost half a degree and is quite beautiful in even quite a modest telescope. It has an integrated magnitude of about 6 and so is on the threshold of naked - eye visibility. The cluster is quite old as these things go, about 300 million light years. It is about 5000 light years distant, in the northern part of the constellation of Puppis. Although planetary nebula distances are notoriously difficult to measure, NGC 2438 seems to be in the foreground and is not connected to the cluster. Planetaries are in an

PIX4568052

 
Artist's view of the solar system - Solar system artwork - Artist's view of the solar system with Pluto. Planets are represented in order of proximity to the sun. From left to right: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. A comet and a planetary nebula are also represented. Solar system artwork with Pluto. The planets are shown from the nearest planet of the Sun, Mercury (left), to the farthest (right), Pluto. A comet and a planetary nebula are shown. Since August 2006, Pluto is no more a planet but a dwarf planet called 134340 Pluto

PIX4630230

Artist's view of the solar system - Solar system artwork - Artist's view of the solar system with Pluto. Planets are represented in order of proximity to the sun. From left to right: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. A comet and a planetary nebula are also represented. Solar system artwork with Pluto. The planets are shown from the nearest planet of the Sun, Mercury (left), to the farthest (right), Pluto. A comet and a planetary nebula are shown. Since August 2006, Pluto is no more a planet but a dwarf planet called 134340 Pluto

PIX4630230

 
Globular cluster M15 in Pegase - Globular cluster M15 in Pegasus - View of the globular cluster M15 by the Hubble space telescope. Located about 35,000 light years away from Earth in the constellation Pegase, M15 is one of 150 known globular clusters forming a vast halo around our galaxy. The bluish object in the middle left of the image is a planetary nebula: Kuestner 648 (Pease 1). Planetary nebulae are gas shells ejected by a star at the end of life, after its phase of red giante; they are very rarely observed in globular clusters or their presence is not yet well understood. The globular cluster Messier 15 is shown in this color image obtained with the NASA Hubble Space Telescope. Lying some 35,000 light - years from Earth in the direction of the constellation Pegasus, M15 is one of almost 150 known globular clusters that form a vast halo surrounding our Milky Way galaxy. The bluish object to the middle left of the image is a gas cloud surrounding a dying star, a planetary nebula k

PIX4565141

Globular cluster M15 in Pegase - Globular cluster M15 in Pegasus - View of the globular cluster M15 by the Hubble space telescope. Located about 35,000 light years away from Earth in the constellation Pegase, M15 is one of 150 known globular clusters forming a vast halo around our galaxy. The bluish object in the middle left of the image is a planetary nebula: Kuestner 648 (Pease 1). Planetary nebulae are gas shells ejected by a star at the end of life, after its phase of red giante; they are very rarely observed in globular clusters or their presence is not yet well understood. The globular cluster Messier 15 is shown in this color image obtained with the NASA Hubble Space Telescope. Lying some 35,000 light - years from Earth in the direction of the constellation Pegasus, M15 is one of almost 150 known globular clusters that form a vast halo surrounding our Milky Way galaxy. The bluish object to the middle left of the image is a gas cloud surrounding a dying star, a planetary nebula k

PIX4565141

 
Aquarius Constellations, Capricorn, Austral Fish and Microscope - Constellations of Aquarius, Capricorn, Piscis Austrinus, Microscopium - Field around the Aquarius constellation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best s

PIX4594319

Aquarius Constellations, Capricorn, Austral Fish and Microscope - Constellations of Aquarius, Capricorn, Piscis Austrinus, Microscopium - Field around the Aquarius constellation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best s

PIX4594319

 
Star cluster M46 and M47 and NGC 2438 in the stern - Open clusters M46 and M47 - M46 (NGC 2437), on the left, is a cluster of age stars located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. On the right, cluster M47 (NGC 2422). Between the two clusters we can see a third one: NGC 2425. M46 and M47 are two open clusters that lie a little more than 1 degree apart in the sky in the constellation of Pupis. M46, containing planetary nebula NGC 2438, is seen at left in this photo, and M47 is at right. M47 is a bright cluster that can be seen with the unaided eye under dark skies. It is comprised of about 30 stars, and is 30 arc minutes in diameter and has an overall brightness of 4.4 magnitude

Vincent Toporenko

PIX4568072

Star cluster M46 and M47 and NGC 2438 in the stern - Open clusters M46 and M47 - M46 (NGC 2437), on the left, is a cluster of age stars located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. On the right, cluster M47 (NGC 2422). Between the two clusters we can see a third one: NGC 2425. M46 and M47 are two open clusters that lie a little more than 1 degree apart in the sky in the constellation of Pupis. M46, containing planetary nebula NGC 2438, is seen at left in this photo, and M47 is at right. M47 is a bright cluster that can be seen with the unaided eye under dark skies. It is comprised of about 30 stars, and is 30 arc minutes in diameter and has an overall brightness of 4.4 magnitude

Vincent Toporenko

PIX4568072

 
Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

PIX4594337

Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

PIX4594337

 
Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

PIX4594347

Aquarius Constellation - Constellation of Aquarius - Field around the Aquarius constelllation. The Helix planetary nebula appears as a red dot towards the center of the image. Aquarius (The Water Carrier) is a large but relatively insconspicuous southern zodiacal constellation and has an area of about 980 square degrees, which makes it the 10th largest. Its origins as a constellation can be traced back to Babylonian times and has usually been delineated as a figure pouring water from a jar in the general direction of Capricornus and Piscis Austrinus, themselves quite watery constellations. The Sun is in this part of the sky in February and March, following the Ecliptic. The constellation embraces many objects of telescopic interest, including the Helix nebula and the Mira - like variable star R Aquarii. Also notable are the globular clusters M2 (NGC 7089) and the Saturn planetary nebula NGC 7009. Best seen in the early evening in August

PIX4594347

 
Constellations of Capricorn, Austral Fish, Microscope, Crane and Indian - Constellations of Capricorn, Piscis Austrinus, Microscopium, Grus, Indus - From top to bottom and left to right, the planetary nebula Helix, the constellations of Capricorn, the Austral Fish with the brilliant star Fomalhaut, the small constellation of the Scope, the Crane and the Indian. From top left to bottom right are the helix nebula (red dot), the constellations of Capricornus, Piscis Austrinus, Microscopium, Grus and Indus

PIX4592288

Constellations of Capricorn, Austral Fish, Microscope, Crane and Indian - Constellations of Capricorn, Piscis Austrinus, Microscopium, Grus, Indus - From top to bottom and left to right, the planetary nebula Helix, the constellations of Capricorn, the Austral Fish with the brilliant star Fomalhaut, the small constellation of the Scope, the Crane and the Indian. From top left to bottom right are the helix nebula (red dot), the constellations of Capricornus, Piscis Austrinus, Microscopium, Grus and Indus

PIX4592288

 
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The evolution of stars - Illustration - The evolution of stars - Illustration - All stars are born in interstellar clouds but according to their masses they will follow different destinies. From top to bottom: - The brown dwarf - The red dwarf, a small star that will become a white dwarf and then a black dwarf. - A star of the same type as the Sun, which will evolve into a red giant then planetary nebula to become a white dwarf and end up as a black dwarf. - A blue giant star that becomes supergeant red to explode in supernova and finish either black hole or neutron star. Every stars come to life in interstellar clouds, but their evolution will depend on their mass; from top to bottom: - A brown dwarf - A red dwarf, a small star which will slowly collapse to become a white dwarf then a black dwarf. - A Sun - like star will become a red giant then a planetary nebula, a white dwarf and will end as a black dwarf. - A blue star will become a red supergiant, then will explode in a supernova

PIX4573087

The evolution of stars - Illustration - The evolution of stars - Illustration - All stars are born in interstellar clouds but according to their masses they will follow different destinies. From top to bottom: - The brown dwarf - The red dwarf, a small star that will become a white dwarf and then a black dwarf. - A star of the same type as the Sun, which will evolve into a red giant then planetary nebula to become a white dwarf and end up as a black dwarf. - A blue giant star that becomes supergeant red to explode in supernova and finish either black hole or neutron star. Every stars come to life in interstellar clouds, but their evolution will depend on their mass; from top to bottom: - A brown dwarf - A red dwarf, a small star which will slowly collapse to become a white dwarf then a black dwarf. - A Sun - like star will become a red giant then a planetary nebula, a white dwarf and will end as a black dwarf. - A blue star will become a red supergiant, then will explode in a supernova

PIX4573087

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