NASA's Webb telescope discovers tiny moon around Uranus

The Webb Space Telescope has spotted a tiny new moon orbiting Uranus.

The new member of the lunar gang, announced on Tuesday by NASA, appears to be just 10km wide.

It was spotted by the telescope's near-infrared camera during observations in February.

Of the planet's now 29 moons, this one is the 14th member of the system of moons orbiting inward of the largest moons,Miranda, Ariel, Umbriel, Titania, and Oberon. pic.twitter.com/UbZNW287O1— NASA Webb Telescope (@NASAWebb) August 19, 2025

Scientists think it hid for so long - even eluding the Voyager 2 spacecraft during its flyby about 40 years ago - because of its faintness and small size.

Uranus has 28 known moons that are named after characters from Shakespeare and Alexander Pope.

About half are smaller and orbit the planet at closer range.

This newest addition, still nameless, ups the planet's total moon count to 29.