Uranus

Uranus (pronounced /'j??r?n?s/, /j?'re?n?s/) is the seventh planet from the Sun and the third-largest and fourth-most enormous planet in the solar system. It is named after the earliest Greek deity of the sky (Uranus, ???a???), the father of Kronos (Saturn) and grandfather of Zeus (Jupiter). Uranus was the first planet exposed in modern times. Though it is visible to the naked eye like the five classical planets, it was never familiar as a planet by ancient observers owed to its dimness. Sir William Herschel announces its discovery on March 13, 1781, growing the known boundaries of the solar system for the first time in current history. This was also the first discovery of a planet complete using a telescope.

Uranus and Neptune have internal and atmospheric compositions diverse from those of the larger gas giants Jupiter and Saturn.