'Super-Neptune' Exoplanet Discovered
Wednesday, January 21, 2009 - 22:42
in Astronomy & Space
Astronomers have discovered a planet somewhat larger and more massive than Neptune orbiting a star 120 light-years from Earth. While Neptune has a diameter 3.8 times that of Earth and a mass 17 times Earth's, the new world (named HAT-P-11b) is 4.7 times the size of Earth and has 25 Earth masses.