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NASA Picture Of The Day
Planetary Smash-Up
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... (More at NASA Picture Of The Day)
Planetary Smash-Up
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... (More at NASA Picture Of The Day)