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Centauri Dreams

A Biosignature Plus for K-Class Stars

13 Mar 2019, 17:22 UTC
A Biosignature Plus for K-Class Stars NASA Ames/JPL-Caltech/T.Pyle.

Kepler-62 is a reminder of how interesting K-class stars (like Alpha Centauri B) can be. Here we find two worlds that are conceivably in the habitable zone of their star, with Kepler 62f, imagined in the image below, orbiting the host star every 267 days. Kepler-62e, the bright object depicted to the right of the planet, may orbit within the inner edge of the habitable zone. Both planets are larger than Earth, Kepler 62f about 40 percent so, while Kepler-62e is 60 percent larger.

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