The first rocky planet confirmed to be orbiting another star is truly one strange world, with rock rains, potentially raging volcanoes, and huge temperature differences between its night and day sides ...

NASA has discovered a distant exoplanet dubbed GJ 1214b that is 40 light years away from Earth. The planet is dubbed a "Super Earth" because it's larger than our planet, but smaller than gas giants ...

It may be close to Earth's size and orbiting a sunlike star—but that's where the similarities end between our world and 55 Cancri e. New observations show that the so-called super-Earth is the densest ...