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Submission + - Was a giant planet kicked out, Saving Earth? (

clinko writes: "MSNBC Cosmic Log has an interesting story wherein Computer simulations suggest that a giant planet was kicked out of our solar system billions of years ago, saving Earth in the process.

The concept appears in a paper written by David Nesvorny, a researcher at the Southwest Research Institute, and published in The Astrophysical Journal Letters. His findings aren't based on the discovery of an actual Planet X, but instead are the result of thousands of simulations re-enacting the dynamical development of our planetary system."

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