Westerlund 2: A Stellar Sight : 無料・フリー素材/写真
Westerlund 2: A Stellar Sight / Smithsonian Institution
| ライセンス | No known copyright restrictions(著作権制限なし) |
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| 説明 | Description: This Chandra X-ray Observatory image shows Westerlund 2, a young star cluster with an estimated age of about one or two million years that contains some of the hottest, brightest, and most massive stars known. In this image, low-energy X-rays are colored red, intermediate-energy X-rays in green, and high-energy X-rays in blue. The image shows a very high density of massive stars that are bright in X-rays, plus diffuse X-ray emission. An incredibly massive double star system called WR20a is visible as the bright yellow point just below and to the right of the cluster's center.Creator/Photographer: Chandra X-ray ObservatoryNASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. The mirrors on Chandra are the largest, most precisely shaped and aligned, and smoothest mirrors ever constructed. Chandra is helping scientists better understand the hot, turbulent regions of space and answer fundamental questions about origin, evolution, and destiny of the Universe. The images Chandra makes are twenty-five times sharper than the best previous X-ray telescope. NASA's Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory controls Chandra science and flight operations from the Chandra X-ray Center in Cambridge, Massachusetts.Medium: Chandra telescope x-rayDate: 2008Persistent URL: chandra.harvard.edu/photo/2008/wd2/Repository: Smithsonian Astrophysical ObservatoryGift line: NASA/CXC/Univ. de Liège/Y. Naze et alAccession number: wd2 |
| 撮影日 | 2008-10-08 00:00:00 |
| 撮影者 | Smithsonian Institution , United States |
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