Scientists found evidence of possible underground oceans on Uranus moons Ariel and Miranda using data from the 1986 Voyager 2 fly-by. The discovery of liquid water on these moons, although uncertain, could support the search for extraterrestrial life. The findings follow a trend of discovering outer solar system ocean worlds like Enceladus and Europa. However, despite decades of research, Uranus and Neptune remain the least explored planets. Scientists hope future spacecraft missions will uncover more information about these distant and mysterious ice giants.