Kepler is a Space Observatory launched on March 07,2009 by NASA to discover Earth-size planets orbiting other stars
The spacecraft, is named after the Renaissance astronomer Johannes Kepler
On May 13, 2009, at 00:01 UTC, Kepler successfully completed its commissioning phase and began its search for planets around other stars
On June 19, 2009, the spacecraft successfully sent its first science data to Earth
The spacecraft has a mass of 1,039 kilograms (2,291 lb) and contains a Schmidt Camera with a 0.95-meter (37.4 in) front corrector plate (lens) feeding a 1.4-meter (55 in) primary mirror – at the time of its launch this was the largest mirror on any telescope outside Earth orbit,though the Herschel Space Observatory took this title a few months later
As of January 2015, Kepler and its follow-up observations had found 1013 confirmed exoplanets in about 440 Steller Systems, along with a further 3,199 unconfirmed planet candidates
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