Uranus is the seventh planet frae the Sun. It has the third-lairgest planetary radius an fowerth-lairgest planetary mass in the Solar Seestem. Uranus is similar in composeetion tae Neptune, an baith are o different chemical composeetion than the lairger gas giantsJupiter an Saturn. For this reason, astronomers sometimes place them in a separate category cried "ice giants". Uranus's atmosphere, altho similar tae Jupiter's an Saturn's in its primary composeetion o hydrogen an helium, contains mair "ices" such as watter, ammonie, an methane, alang wi traces o hydrocarbons. It is the cauldest planetary atmosphere in the Solar Seestem, with a minimum temperatur o 49 K (−224.2 °C), an haes a complex, layered clood structur, wi watter thoucht tae mak up the lawest cloods, an methane the uppermost layer o cloods. In contrast, the interior o Uranus is mainly componed o ices an rock.
It is the anly planet whose name is derived frae a figure frae Greek mythology rather than Roman meethology lik the ither planets, frae the Latinized version o the Greek god o the sky, Ouranos. Lik the ither gas giants, Uranus haes a ring seestem, a magnetosphere, an numerous muins. The Uranian seestem heas a unique configuration amang the planets acause its axis o rotation is tiltit sideways, nearly intae the plane o its revolution aboot the Sun. Its north an sooth poles tharefore lie whaur maist ither planets hae thair equators. In 1986, images frae Voyager 2 shawed Uranus as a virtually featurless planet in veesible licht wioot the clood bands or storms associated wi the ither giants. Terrestrial observers hae seen signs o saisonal chynge an increased wather activity in recent years as Uranus approached its equinox. The wind speeds on Uranus can reach 250 meters per seicont (900 km/h, 560 mph).