CAMBRIDGE, Mass., Feb. 21 (UPI) -- The Hubble Space Telescope has found a new type of planet outside our solar system, a water world covered by a thick, steamy atmosphere, U.S. astronomers say.
A team of astronomers led by Zachory Berta of the Harvard-Smithsonian Center for Astrophysics made the observations of the planet GJ 1214b, about 2.7 times Earth's diameter and weighing almost seven times as much.