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Preview | 30s | Video has closed captioning.
In deep space billions of kilometers from Earth, orbiter Rosetta travels towards an icy rock that hurtles through space at tens of thousands of kilometers per hour. Rosetta has been in space for ten years, but she will do something no other spacecraft has ever attempted — land on the volatile surface of a comet as it flies around the sun.
Aired: 11/19/14
