Wednesday, June 28, 2017

TRAPPIST-1: System with 7 Earth-Size Exoplanets

TRAPPIST-1: System with 7 Earth-Size Exoplanets:

Of the seven planets in TRAPPIST-1, three lie within the habitable zone, the region around a star where liquid water could form on a planet's surface, making them excellent contenders for the evolution of life. One world lies farther out, and is likely icy, while the three closest to the star are heated by its temperatures.

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