High Quality Content by WIKIPEDIA articles! Kepler-9c is one of the first seven extrasolar planets, exoplanets, discovered by NASA`s Kepler Mission, and one of at least two planets orbiting the star Kepler-9. Kepler-9c and Kepler-9b were the first exoplanets confirmed to be transiting their star. The planet`s discovery was announced by the Kepler Mission team on August 26, 2010 after its initial discovery by Kepler. At the time, it was one of 700 planetary candidates noted by Kepler.