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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 rotates at a nearly 90-degree angle from the plane of its orbit.
Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
Uranus is the seventh planet from the Sun, and the third largest planet in our solar system. It appears to spin sideways.
Uranus was added as a planet in 1781 and Neptune was discovered in 1846. Ceres was discovered between Mars and Jupiter in 1801 and originally classified as a planet.
Uranus orbits our Sun, a star, and is the seventh planet from the Sun at a distance of about 1.8 billion miles (2.9 billion kilometers).
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Uranus Right Now. Latest Stories. Previous. One Way Light Time to the Sun. Loading... Length of Year. 30,687 Earth Days. Planet Type. Ice Giant. Distance from Sun. Loading... mi km. One Way Light Time to the Sun. Loading... Length of Year. 30,687 Earth Days. Planet Type. Ice Giant. Distance from Sun. Loading... mi km. One Way Light Time to the ...
Neptune is one of two ice giants in the outer solar system (the other is Uranus). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core. Of the giant planets, Neptune is the densest.
Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons.
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 they are likely captured asteroids.