NASA scientists say 4 of Uranus’ large Moons likely hold water under their icy crusts

NASA scientists have found that four of Uranus' largest moons likely contain an ocean layer between their cores and icy crusts, which suggests that these hold oceans that could be dozens of miles deep. In all, at least 27 moons circle Uranus, with the four largest ranging from Ariel, at 1,160 kilometres across, to Titania, which is 1,580 kilometres across.