Jupiter is the largest planet in the solar system and the fifth in order of distance from the Sun. It is a gas giant that is part of the so-called outer planets. It gets its name from the Roman god Jupiter (Zeus in Greek mythology). It is the third brightest natural object in a clear night sky after the Moon and Venus.

It is the planet that offers the greatest brightness throughout the year depending on its phase. It is also, after the Sun, the largest celestial body in the solar system, with a mass almost two and a half times that of the other planets combined (with a mass 318 times that of Earth and three times that of Saturn , in addition to being, in terms of volume, 1321 times larger than Earth). It is also the oldest planet in the solar system, being even older than the sun; This discovery was made by researchers at the University of Münster in Germany.