Uranus orbits our Sun, a star, and is the seventh planet from the Sun at a distance of about 1. Uranus takes about 17 hours to rotate once a Uranian day , and about 84 Earth years to complete an orbit of the Sun a Uranian year.
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. Uranus has an atmosphere made mostly of molecular hydrogen and atomic helium, with a small amount of methane. Uranus has 27 known moons, and they are named after characters from the works of William Shakespeare and Alexander Pope. Uranus has 13 known rings. The inner rings are narrow and dark and the outer rings are brightly colored.
Voyager 2 is the only spacecraft to fly by Uranus. No spacecraft has orbited this distant planet to study it at length and up close. Like Venus, Uranus rotates east to west. But Uranus is unique in that it rotates on its side. Uranus is the "butt" of more than a few jokes and witty and not so witty puns, but it's also a frequent destination in various fictional stories, such as the video game Mass Effect and TV shows like "Doctor Who.
If you were on another planet looking back at our solar system, you would see our sun as a star. Our Milky Way galaxy has more planets than it has stars. In our solar system we have eight planets: Mercury, Venus, Earth, and Mars are the inner rocky planets. Jupiter and Saturn are the outer gas giants. Uranus and Neptune are the outer ice giants.
Uranus is the seventh planet from the sun. Uranus got its name from the father of the Roman god, Saturn. When the astronomer, William Herschel, was trying to chart the stars, he thought he found a disk-like object that was a comet. Gravity, pulling at dust and swirling gas created the ice giant, Uranus. Uranus and Neptune are the two ice giants located in the outer solar system.
The inside of Uranus is believed to contain two layers which are the core and a mantle. Scientists think that the core is mostly made up of rock and ice and the mantle is around Although slightly larger in diameter than its neighbor, Neptune, Uranus has a smaller mass. The pressure on the surface is around 1. In other words, a 10 feet dunk on Earth would equate to an 11 feet dunk on Uranus. Temperatures are freezing degrees C to degrees C in the deeper troposphere where the clouds are.
The planet can get as hot as it gets cold. But the sun is far away from Uranus, so the furnace in the core of Uranus probably plays a much larger role in keeping the planet warm. This kind of extreme temperature difference creates seasons as long as 20 years.
This is easier to understand if you think about how large Uranus is. Uranus is a giant planet. Wind speeds on giant planets can be as much as 15 times stronger than winds on Earth. Winds on Uranus can travel as fast as miles per hour. Uranus has 27 moons, Jupiter has 67 while the Earth has just one. Uranus has third most moons in the solar system. The last of these 27 moons was discovered in The ring particles are small, ranging from a dust-sized particles to small boulders.
There are eleven inner rings and two outer rings. The first rings were discovered in with the two outer rings being discovered in Hubble Space Telescope images between and These include Oberon, Titania and Miranda.
All are frozen worlds with dark surfaces. Some are ice and rock mixtures. The most interesting Uranian moon is Miranda; it has ice canyons, terraces, and other strange-looking surface areas.
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