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What's Flinging Comets Out of the Oort Cloud?

31 May 2011, 16:37 UTC
What's Flinging Comets Out of the Oort Cloud?
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What's nudging comets our way? Every so often a comet gets flung out of the Oort Cloud, a swarm of comets on the fringes of the solar system, and gets close enough to Earth for us to see it. But they don't seem to be scattered at random. [More]

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