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NASA finds water on Saturn-mass planet outside Solar System

With the help of 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. NASA said that 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.