Hidden Oceans Unveiled: New Study Reveals Subsurface Seas in Four of Uranus' Largest Moons

A recent study featuring new modeling and re-analysis of data collected by the Hubble Space Telescope in 1998 and NASA's Voyager spacecraft has brought forth exciting revelations about the ice giant Uranus. The study, conducted by a team of scientists from NASA's Jet Propulsion Laboratory in Southern California, led by Julie Castillo-Rogez, suggests that four of Uranus' large moons - Ariel, Umbriel, Titania, and Oberon - are likely to harbor internal oceans that could be dozens of miles deep. Uranus, the seventh planet from the Sun, is an enigmatic world that has long captivated scientists and researchers. With a diameter of approximately 31,763 miles (51,118 kilometers), it is surrounded by a plethora of celestial bodies, including 27 known moons and four major rings. The four largest moons, Ariel, Umbriel, Titania, and Oberon, have diameters ranging from 720 miles (1,160 kilometers) for Ariel to 980 miles (1,580 kilometers) for Titania. The National Academies' 2023 Planetary Science and Astrobiology Decadal Survey prioritized exploring Uranus, prompting planetary scientists to focus on the ice giant to enhance their understanding of this mysterious planetary system. This groundbreaking study not only informs future missions aimed at investigating these moons but also has implications that extend beyond Uranus, as it explores potential mechanisms and their relevance to other water-rich bodies in the solar system that have limited internal heat.