Here, we see the star, Kepler-9, being circled by its two planets, Kepler-9b, on the right, and Kepler 9c. Both planets are close in size to Saturn. Another super-Earth-size planet was later spotted in the same system. And still later, on February 2, 2011, Kepler confirmed a system with six planets circling their star, Kepler-11. NASA has called this Kepler-11 system "the fullest, most compact planetary system yet discovered beyond our own."
May 19, 2013 12:01 AM PDT
Photo by: NASA/Ames/JPL-Caltech
| Caption by: Edward Moyer
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