18 January 2011

Rocky Exoplanet Discovered!

a huge step closer. Called Kepler-10b, it's just 40% larger than Earth — the smallest planet yet found outside our solar system. Not only that: unlike the vast majority of the 500-odd exoplanets found to date, and unlike Jupiter and Neptune, Kepler-10b isn't just a huge ball of gas or ice. Like Earth, it's made of rock. "This is a historic discovery," said Geoff Marcy of the University of California, Berkeley,

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