Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

[Related: Neptune’s faint rings glimmer in new James Webb Space Telescope image.] “The three newly discovered moons are the faintest ever found around these two ice giant planets using ground-based ...

Neptune was supposed to be the quiet, distant ice giant, a cold blue marble barely warmed by the Sun. Instead, the James Webb ...

The James Webb Space Telescope spends most of its observational time peering through time and space to reveal incredibly distant objects. On a few occasions, astronomers have used it to look at ...

Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

New images released Wednesday from NASA's James Webb Space Telescope are revealing Neptune, and the planet's hard-to-detect rings, in a fresh light. "It has been three decades since we last saw these ...

A rare astronomical event will display six planets in alignment, visible after sunset, giving skywatchers a spectacular ...

A study suggests the ice giants Uranus and Neptune aren't quite as watery as previously thought. They may also contain huge amounts of frozen methane, potentially solving the puzzle of how they formed ...

(CNN) — Astronomers using the powerful eye of the James Webb Space Telescope have spotted a previously unknown moon whirling around Uranus, according to NASA. The discovery boosts the number of moons ...

The new Uranian moon S/2023 U1 was discovered using the Magellan telescope on November 4, 2023. Image: Scott Sheppard Astronomers found a new moon orbiting Uranus, as well as two around Neptune. The ...

40 years later, mission boffin recalls being told to pronounce it correctly It is 40 years since Voyager 2 performed the ...