Free Astronomy Magazine July-August 2014
EXOPLANETS 28 JULY-AUGUST 2014 There are a mega-Earth out there T he Kepler-10 star system, 564 light-years away, with its two planets. The one in the foreground is Kepler-10c, the first example of mega-Earth, a rocky and metallic body character- ized by an unusually high density. [David A. Aguilar (CfA)]
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