A Second Earth

Kepler-22b. That’s the name of the exoplanet that NASA’s Kepler spacecraft has discovered. What’s so fascinating about this exoplanet is that like our Earth, Kepler-22b orbits in a similar solar system as ours and is believed to hold liquid water. What’s more, scientists believe that the overall temperate on Kepler-22b is a comfortable 72 degrees.

http://www.ghosttheory.com/2011/12/06/seti-resumes-focuses-on-kepler-22b-for-aliens

http://www.guardian.co.uk/science/2007/apr/25/starsgalaxiesandplanets.spaceexploration