Friday, April 18, 2014

Kepler Discovers First Earth-size Planet in the Habitable Zone of Another Star (Video)

NASA's Kepler Space Telescope has discovered the first validated Earth-size planet orbiting in the habitable zone of a distant star, an area where liquid water might exist on its surface. The planet, Kepler-186f, is ten percent larger in size than Earth and orbits its parent star every 130 days.  The star, located about 500 light-years from Earth, is classified as an M1 dwarf and is half the size and mass of our sun.