The seventh planet from the Sun with the third largest diameter in our solar system, Uranus is very cold and windy. The ice giant is surrounded by 13 faint rings and 27 small moons as it …

Uranus is an ice giant. Most of its mass is a hot, dense fluid of "icy" materials – water, methane and ammonia – above a small rocky core.

2025年1月9日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

2025年1月9日 · Uranus is the seventh planet from the Sun, and the third largest planet in our solar system. It appears to spin sideways.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

All of Uranus's inner moons (those observed by Voyager 2) appear to be roughly half water ice and half rock. The composition of the moons outside the orbit of Oberon remains unknown, but …

2025年1月9日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

2012年12月14日 · Voyager 2 is the only spacecraft to have visited Uranus and Neptune. At closest approach, the spacecraft came within 50,600 miles (81,500 km) of Uranus's cloud …

2024年4月23日 · Information on this site is gathered either directly from scientists and engineers working on active missions or from Websites from global space agencies, including NASA and …

2022年5月31日 · Neptune and Uranus have much in common — they have similar masses, sizes, and atmospheric compositions — yet their appearances are notably different. At visible …