Astronomers discover a brand-new class of exoplanet — the boiling…

NASA's Kepler mission has been spoiling us with planetary discoveries left and right as of late. Now, researchers using NASA's Hubble Space Telescope have discovered an entirely new class of planet — they call it a "waterworld," and it might be covered in broiling-hot ice. » 2/21/12 11:21am 2/21/12 11:21am