Discovery of an extrasolar earth-sized planet
Friday, October 8, 2010 - 13:30
in Astronomy & Space
(PhysOrg.com) -- There are now over 490 confirmed extrasolar planets. The vast majority are gas giants like Jupiter, but they are much stranger because many orbit close to their stars and so are much hotter than Jupiter (some are even closer to their star than Mercury is to the sun).