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Esperto
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This artist's concept shows a celestial body about the size of our moon slamming at great speed into a body the size of Mercury. NASA's Spitzer Space Telescope found evidence that a high-speed collision of this sort occurred a few thousand years ago around a young star, called HD 172555, still in the early stages of planet formation. The star is about 100 light-years from Earth.
http://www.nasa.gov/multimedia/imagegaller...ature_1454.html
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0 replies since 27/8/2009, 00:46 29 views
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