After four years circling space looking for new planets, the Kepler spacecraft has identified three planets that look like they could possibly sustain life. The first two, known as Kepler-62e and Kepler-62f (shown above, top and middle), are approximately 1,200 light-years away and have estimated temperatures of -3 degrees C (26.6 F) and -65 degrees C (-85 F) respectively. The third planet, Kepler-69c (shown above, bottom) boasts a summer day-like temperature of 27 degrees C (80.6 F). Some scientists think these planets could actually be covered in oceans, but they are unsure if they would be composed of water or some other liquid.