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James Webb Telescope Discovers Tiny New Moon Orbiting Uranus

James Webb Telescope discovers previously unknown moon orbiting Uranus

From Hacker News Original Article Hacker News Discussion

Astronomers using the James Webb Space Telescope have discovered a tiny new moon orbiting Uranus, increasing its known satellites to 29. This previously undetected moon is about six miles wide and lies between the orbits of Ophelia and Bianca.

Why it matters: The discovery reveals more about Uranus' complex satellite system and the limits of past missions like Voyager 2.

The big picture: Uranus, the sideways ice giant, now has 29 moons named mostly after Shakespearean characters, deepening our understanding of outer solar system bodies.

Stunning stat: The new moon, designated S/2025 U1, is only about 6 miles (10 km) in diameter—too small for Voyager 2 to detect.

Commenters say: Readers are excited about James Webb’s continuing contributions to solar system science, praising its superior sensitivity over past missions.