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Scientists discover "mega-Earth" Kepler-10c

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Scientists at NASA say they've discovered a new type of rocky planet orbiting a star 5-hundred-60 light years away from Earth. The new planet, named Kepler-10c,... is 17 times heavier than Earth but is just twice its size. That's noteworthy since scientists previously didn't believe a rocky planet could be so large. While they still don't fully understand how the mega-planet was formed,... NASA says the discovery could change scientists' understanding of the origin of the universe.