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Smallest exoplanet yet is found

Planet is just under twice Earth's size

7:18am, April 21, 2009

Inching ever closer to the goal of discovering a planet just like home, Swiss astronomers have announced finding the smallest extrasolar planet ever detected. The object, a mere 20.5 light-years away, could be as tiny as 1.9 Earths and isn’t likely to exceed twice that amount.

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