Uranus
Uranus, named after the anciant Greek god of the sky, the father of Zeus (Jupiter). I'ts the only planet which is named after a Greek god, instead of a Roman god, you pronounce Uranaus as U ranus, instead of the joke many people make, which is pronouncing it as Ur anus. Uranus is the least massive of the giant planets, with a mass of 8.6810×1025 kg which is roughly 14.5 earths. the radius of Uranus is 25.559 km which is aobut four times as big as the earth. Uranus only has a density of 1.27 g/cm3 which indicates thet the planet is mainly made out of various ices, such as water ammonia and methane. It is not precisely known in which quantities these ices occur, it is certain though that they take up the largest amount of mass. The current model of Uranus consists of a core, which is made out of iron and nickel, this core has a icy mantle which covers the core. around this mantle there is just a lot of hydrogen and helium kept together by the gravitational pull of Uranus. The core of Uranus has a pressur of 8 million bars, and a temperature of about 5000K. The rings of Uranus were discovered in March 1977, the first thing they believed were that there were 9 rings, than in 1968 they discovered another two rings, and in 2005 they discovered another two. The rings probably exists out of pieces that came from one of the 19 moons Uranus got.The atmosphere of Uranus is composed mostly of Hydrogen and Helium with a small amount of Methane (H2, He and CH4)
On the surface of Uranus gravity would be 89% of that on Earth (however as a gas planet with a liquid centre Uranus does not have definable surface)
The minimum atmospheric temperature of Uranus is -224°C making it the coldest planet in the solar system
Uranus’ moons are named after characters created by William Shakespeare and Alaxander Pope these include Oberon, Titania and Miranda
The only spacecraft to visit Uranus is Voyager 2 which passed in 1986 passing at a distance of 81,500 km
Uranus has two sets of rings, nine inner rings and two outer rings. The first set of rings was discovered in 1977 and the second set was discovered in 2003 by the Hubble Space Telescope
