Wednesday, August 29, 2012

Orbiting in the Habitable Zone of Two Sun

This diagram compares our own solar system to Kepler-47, a double-star system containing two planets, one orbiting in the so-called "habitable zone." This is the sweet spot in a planetary system where liquid water might exist on the surface of a planet. 

Credit: NASA/JPL-Caltech/T. Pyle

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