Evaporating planets and twins of Tatooine are all well and good, but what of Kepler's stated mission, to find Earth-size planets in the habitable zone? Are we there yet?
Kepler's most recent discovery, announced last month, is of the smallest habitable-zone planets found to date, planets that are beginning to approach the size of our own.
Above is an artist's take on the smallest such planet yet, Kepler-62f.
May 19, 2013 12:01 AM PDT
Photo by: NASA Ames/JPL-Caltech
| Caption by: Edward Moyer
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