Get ready for a close approach on Feb. 15th
Asteroid 2012 DA14 is about half the size of a football field and will pass very close to Earth this month, within the orbit of Earth satellites. While we don't have to worry about this space rock hitting us, smaller objects hit Earth all the time. Find out where they're coming from, what's collided in the past, and what the current dangers are in this PowerPoint presentation.
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