December 03, 2011
Near Earth-Sized Planet Discovered
The National Optical Astronomy Observatory discovered Kepler-21b, a planet which is close to the size of earth and only about 352 light years away. This discovery is significant that the planet is relatively Earth-sized while its mass is about 10 times the size of Earth and its radius is only 1.6 times the size of Earth's. However, the new planet has a star which is a bitbigger and hotter than Earth's sun(younger). Also since the planet is too close to its star, the planet is too hot to contain liquid water.
For more information: http://www.huffingtonpost.com/2011/11/30/kepler-21b-new-planet-discovered_n_1121938.html
Posted by sangsong at December 3, 2011 10:45 PM