NASA finds water on Saturn-mass planet outside Solar System
Using NASA's Hubble and Spitzer space telescopes, astronomers have found evidence of water in the atmosphere of a Saturn-mass exoplanet some 700 light-years away. The planet, WASP-39b, has three times as much water as Saturn does, which suggests it developed far away from its host star, where it was bombarded by a lot of icy material, said NASA.