Even though S/2025 U1 is pretty tiny, measuring only 10km wide, the team behind the moon spotting say that it's big news.

Astronomers using the James Webb Space Telescope (JWST) have discovered a tiny new moon orbiting Uranus, named S/2025 U1. Measuring just 6 miles (10 kilometers) wide, this faint moon escaped detection ...

JWST has spotted the 29th moon of Uranus, finding an object that’s probably the size of a small city 2.7 billion kilometers away. Within six years of discovering Uranus, William Herschel had found two ...