Astronomers using the James Webb Space Telescope have found an unknown moon orbiting Uranus, bringing the planet’s total to 29 — and more likely remain undiscovered.

Astronomers using NASA's James Webb Space Telescope have discovered a newfound moon orbiting icy Uranus, the seventh planet from the sun. The moon, known as S/2025 U1, is just 6 miles (10 kilometers) or so in diameter,