uranus88Snificant Events. March 13, 1781: British astronomer William Herschel discovers Uranus – the first new planet discovered since ancient times – while searching for faint stars. 1787-1851: Four Uranian moons are discoveredLike Saturn, Jupiter, and Neptune, Uranus is a b ball of gas, often called a jovian or gas giant world.Uranus owes its vibrant blue-green hues not from unusual oceans but from an upper