There's probably an Earth-sized planet with a comfortable temperature as little as 13 light years away, data from NASA’s Kepler space telescope implies.
Scientists with NASA's Kepler mission say they believe they've found the most Earthlike exoplanet yet.
Astronomers have found the smallest planet yet outside our solar system, a rocky planet about one and a half times the size of Earth.
NASA's Kepler Mission has identified more than 750 possible extrasolar planets after monitoring more than 156,000 stars. But it's keeping the best data back.