Triangulating the path of the meteoroid that produced the giant fireball over Russia last Friday: How Amateur Videos Will Help Astronomers Reconstruct Meteorite’s Life History: Astronomers can retrace space rocks’ paths to find their birthplace. – Popular Science.

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This is the best video I’ve seen so far of asteroid 2012 DA14 as it passed by earth last Friday:  Here’s A Video Of Last Week’s Asteroid Fly-By –  Popular Science