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How the Moon Formed: Violent Cosmic Crash Theory Gets Double Boost
7:05
SPACE.comCharles Q. Choi
How the Moon Formed: Violent Cosmic Crash Theory Gets Double Boost
A theory that the moon formed from debris left over from a violent collision between the Earth and a Mars-size object has received a double boost in the form of two new studies. See what they say here.
2015年4月8日
Collision Physics Problems
Videos appear to show midair collision near DC
0:55
Videos appear to show midair collision near DC
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Footage shows the moment of the deadly midair collision over the Potomac River
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Footage shows the moment of the deadly midair collision over the Potomac River
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Video shows moment Delta jets collide
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Video shows moment Delta jets collide
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NTSB investigation into deadly mid-air plane crash in Lancaster could take over a year; pilot ID'd
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