Monday, January 07, 2013
Kepler Finds 'Habitable Zone' exo-planets
NASA's Kepler mission Monday announced the discovery of 461 new planet candidates. Four of the potential new planets are less than twice the size of Earth and orbit in their sun's 'habitable zone', the region in the planetary system where liquid water might exist on the surface of a planet. More from BBC Science about the possibility of "billions" of planets within our galaxy.