At Least Six Moons In Our Solar System Are Thought To Hide Oceans Of Liquid Water Beneath Their Frozen Surfaces — And The List May Keep Growing As Old Spacecraft Data, Improved Models And New Missions

Liquid water is not confined to Earth or to worlds close enough to the Sun for warmth. Several moons in the outer Solar System appear to contain oceans beneath ice shells, kept liquid by combinations of tidal flexing, radioactive decay, salts and amm ...Read more