With NASA's Kepler spacecraft discovering alien worlds at a record pace, it seems to be just a matter of time before an Earth-sized planet is found in the "Goldilocks zone"--that is, in an orbit sized just right for liquid water and life. In today's story from Science@NASA, researchers discuss how they'll explore a cousin of Earth so many light years away.
FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/29mar_goldilocks/
VIDEO: http://www.youtube.com/watch?v=diz4Q3ALi5k
