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
Just 13 parsecs away, a planet astronomers are calling a "super Earth" is orbiting a dwarf star. Its radius is over twice that of Earth, and there's something very surprising in its core. »12/17/09 7:30am 12/17/09 7:30am
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