Image:Vega disk NASA.jpg
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| This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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| Description |
This artist concept illustrates how a massive collision of objects perhaps as large as the planet Pluto smashed together to create the dust ring around the nearby star Vega. New observations from NASA's Spitzer Space Telescope indicate the collision took place within the last one million years. Astronomers think that embryonic planets smashed together, shattered into pieces, and repeatedly crashed into other fragments to create ever finer debris. In the image, a collision is seen between massive objects that measured up to 2,000 kilometers (about 1,200 miles) in diameter. Scientists say the big collision initiated subsequent collisions that created dust particles around the star that were a few microns in size. Vega's intense light blew these fine particles to larger distances from the star, and also warmed them to emit heat radiation that can be detected by Spitzer's infrared detectors. |
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| Source |
Originally from [1], uploaded fromen.wikipedia; description page is/was here. |
| Date |
2007-06-05 (original upload date) |
| Author |
Original uploader was WilyD at en.wikipedia |
| Permission (Reusing this image) |
Courtesy NASA/JPL-Caltech ; ATTRIBUTION; PD-LAYOUT; PD-USGOV-NASA. |
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This image or video was catalogued by Jet Propulsion Lab of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA07217. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information. |
[edit] License information
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This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).
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[edit] Original upload log
(All user names refer to en.wikipedia)
- 2007-06-05 18:51 WilyD 3000×2400×8 (332673 bytes) == Licensing == {{PD-USGov-NASA}} [[Category:Debris disk images]] {{quote|JPL Image Use Policy Unless otherwise noted, images and video on JPL public web sites (public sites ending with a jpl.nasa.gov address) may be used for any purpose without prior pe
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| Date/Time | Dimensions | User | Comment | |
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| current | 12:01, 28 August 2007 | 3,000×2,400 (325 KB) | Liftarn | ({{Information |Description= Courtesy NASA/JPL-Caltech Oh yes, it's found here [http://photojournal.jpl.nasa.gov/catalog/PIA07217] |Source=Originally from [http://en.wikipedia.org en.wikipedia]; description page is/was [http://en.wikipedia.org/w/index.php) |
