The moon will briefly hide Regulus in a dramatic occultation visible across parts of the eastern U.S.

The two faintest outer rings of Uranus look nothing alike, and that mismatch is pushing planetary scientists toward a ...

Two faint rings circling Uranus look almost identical in photographs, but when astronomers finally split their light into a full color spectrum, the rings turned out to be made of strikingly different ...

Scientists studying the rings of Uranus have uncovered evidence that its outer rings contain both water ice and carbon-rich ...