The Horsehead Nebula This photo of the Horsehead nebula was captured by NASA's Hubble Telescope in infrared. It's located in the constellation Orion about light years away from us. The Galaxy This massive galaxy is not much different
Astronomers find a new type of planet: The 'mega-Earth' The newly discovered 'mega-Earth' dominates the foreground of this artist's conception. has a diameter of about miles, times larger than Earth and weighs 17 times as much.