Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is two and a half times more massive than all the other planets in the solar system, combined. It is made primarily of gases and is therefore known as a "gas giant". Jupiter is also surrounded by a faint planetary ring system and has a powerful magnetosphere.

Jupiter was the first planet to form, and its inward migration during the primordial Solar System impacted much of the formation history of the other planets. It is the third brightest natural object in the Earth's night sky after the Moon and Venus and has been observed since prehistoric times. Its name derives from Jupiter, the chief deity of ancient Roman religion.