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Planetary Smash-Up
Planetary Smash-Up
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Stephanie Wilson
Nasa Astronaut
Join Date:
Jul 2009
Posts:
2478
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#1
Planetary Smash-Up
08-26-2009, 06:21 AM
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...
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