Tuesday, November 5, 2013

One in five stars has Earth-sized planet in habitable zone. Astronomers hanging out at the Keck Observatory...

One in five stars has Earth-sized planet in habitable zone. Astronomers hanging out at the Keck Observatory in Hawaii did a statistical estimate. They point out that just because a planet is Earth-sized and has an orbit in the habitable zone, that doesn't mean it's necessarily habitable, because it might not have a surface with water or it might not have the right atmosphere, and other factors, and astronomers don't know the statistics for any of those other factors.


Join the conversation on Google Plus.