Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected a previously unknown tiny moon — provisionally designated S/2025 U 1 — orbiting Uranus. Made in a series of Webb images taken on February 2, 2025, the detection brings Uranus’ total moon count to 29. This Webb/ NIRCam image shows S/2025 U1 as well as 13 of the 28 other known moons orbiting Uranus. Image credit: NASA / ESA / CSA / STScI / M. El Moutamid, SwRI...
