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"Bytram" writes:

ScienceDaily [sciencedaily.com] reports that Astronomers find a new type of planet: The "mega-Earth" [sciencedaily.com]:

Astronomers announced on June 2nd that they have discovered a new type of planet — a rocky world weighing 17 times as much as Earth. Theorists believed such a world couldn't form because anything so hefty would grab hydrogen gas as it grew and become a Jupiter-like gas giant. This planet, though, is all solids and much bigger than previously discovered "super-Earths," making it a "mega-Earth."

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