The search for exoplanets
Astronomy Contributing Editor Ray Jayawardhana explains how astronomers hunt for worlds beyond our own.
In "Are super-sized Earths the new frontier?" (November 2008), Contributing Editor Ray Jayawardhana discusses how recent exoplanet discoveries have uncovered worlds with masses only a few times more than that of Earth. He also explained how astronomers think these "super-Earths" could be more hosipitable to life than Earth itself if one of them orbits its parent star at the right distance.