Uranus May Have More Moons Than We Previously Thought

Uranus May Have More Moons Than We Previously Thought

Uranus has 28 known moons in its orbit, but thanks to the James Webb Space Telescope, scientists believe they just uncovered a 29th moon.

New Moon Discovered Orbiting Uranus Using NASA’s Webb Telescope

Editor’s Note: This post highlights data from Webb science in progress, which has not yet been through the peer-review process. Using NASA’s James Webb Space Telescope, a team led by the Southwest Research Institute (SwRI) has identified a previously unknown moon orbiting Uranus, expanding the planet’s known satellite family to 29. The detection was made during a Webb observation Feb. 2, 2025. “This object was spotted in a series of 10 40-minute…

James Webb Telescope finds hidden moon orbiting Uranus

NASA’s James Webb Space Telescope has uncovered a small moon quietly circling Uranus, a world already known for its unusual tilt, faint rings, and puzzling family of satellites. The discovery, announced by researchers at the Southwest Research Institute (SwRI), raises the tally of Uranus’ moons to 29. A Discovery Four Decades in the Making The moon, temporarily called S/2025 U1, was spotted on February 2, 2025, in a set of ten long-exposure imag…