NASA’s Kepler mission has found five potential Earth-size planets that orbit the habitable zone, the region around a star where the temperature could allow the existence of liquid water, the CBC reports. On Wednesday, NASA released data on over 1,000 possible planets outside our solar system, which more than doubles the number of so-called exoplanets. They haven’t been confirmed, but it’s estimated that up to 90 per cent will be verified as planets. Overall, Kpeler has found 54 potential planets in habitable zones, altough some are at least double the size of Earth. The telescope has been looking at 156,000 stars in about one-fourhundredth of the sky since it launched in Sept. 2009, looking for new planets.