Kepler Space Telescope spies a ‘Mega-Earth’

By Joel Achenbach The Washington Post Published Jun 3, 2014 at 12:01AM
Harvard-Smithsonian Center for Astrophysics The newly discovered “mega-Earth” Kepler-10c dominates the foreground in this artist’s conception. Its sibling, the lava world Kepler-10b, is in the background. Both orbit a sunlike star. Kepler-10c has a diameter of about 18,000 miles, 2.3 times as large as Earth, and weighs 17 times as much. Therefore it is all solids, although it may possess a thin atmosphere shown here as wispy clouds.