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IMAGE number
PIX4572673
Image title
Vue d'artiste d'une cepheide - Cepheid - artist view - Vue d'artiste d'une cepheide. Cepheides are very bright variable stars that serve as cosmic beacons to measure the distance of nearby galaxies. Their pulse period is measured and their absolute luminosite is calculated. By comparing the result to their apparent luminosite in the sky, they can be calculated accurately. A Cepheid variable star pulses in a regular period that is directly related to its intrinsic brightness, allowing astronomers to use such stars as “” standard candles”” to measure distances to other galaxies
Image description
Photo credit
© Don Dixon/Novapix / Bridgeman Images
| Dimension [pixels] | Dimension in 300dpi [mm] | File size [MB] | |
|---|---|---|---|
| Large | 2700 × 902 px | 229 × 76 mm | 548 KB |
| Medium | 1024 × 342 px | 87 × 29 mm | 318 KB |
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