Out of the seven planets found, the ones in the habitable zone have very short revolution period. One of the planets takes little more than 6 Earth-days to revolve around its dwarf star. Another one takes 9.21 Earth-days and the last one in habitable zone take more than 12 Earth-days to take a full revolution around its star. The search for planets capable of life had started in 1995. After NASA's Kepler Space Telescope found signs of the first alternative solar system, the search sped up. A planet called Kepler 10b, it also signaled what NASA said could be a "small planet orbiting a star about 540 light years away."
