Earth-Size Planet Orbiting Nearest Star Discovered | Video
Tuesday, October 16, 2012 - 18:00
in Astronomy & Space
European researchers have detected a planet – just slightly more massive than Earth – orbiting very close to Alpha Centauri B, a sun-like star only 4.3 light-years from our Sun. Orbiting once every 3.2 days, the planet is not in the habitable zone.