NASA scientists have identified a previously unknown moon orbiting Uranus in images captured on 2 February by the James Webb Space Telescope’s Near-Infrared Camera. The finding, announced 19 August, marks the first time the agency has added to the planet’s satellite list since 2023 and showcases Webb’s ability to detect extremely faint objects in the outer solar system. Provisionally labeled S/2025 U1, the body measures just six miles (10 kilometers) across—small enough to have escaped detection by Voyager 2 during its 1986 fly-by—and follows a nearly circular path about 35,000 miles (56,000 kilometers) from Uranus’ center. It sits between the orbits of Ophelia and Bianca and becomes the 14th member of the planet’s inner moon group, bringing Uranus’ overall tally to 29 confirmed satellites. Researchers led by Maryame El Moutamid of the Southwest Research Institute say the discovery underscores the intricate relationship between Uranus’ rings and its swarm of small moons, hinting at a turbulent evolutionary history. The satellite’s final name will be assigned by the International Astronomical Union once follow-up observations and peer review are complete.