Thursday, August 10, 2017
A nearby Sun-like star hosts four Earth-sized planets
Four rocky worlds were found, with two in the habitable zone, about 0.5 and 1.25 times as far from their star as the Earth is from the Sun. That works out well, as Tau Ceti is a bit smaller (78 percent) than the Sun, and is correspondingly less intense. The smallest of the worlds is about 1.7 times the size of Earth, but the habitable zone planets are much larger “super Earths” that could 
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