Jupiter is the oldest and most massive world in the solar system. Learn about the planet's origin story, its great red spot and oceanic moons, and how this ancient world influenced the formation of the solar … After the sun, the moon, and venus, jupiter is the fourth brightest object in the skyâ€although, occasionally, mars can outshine it.

Jupiter is the fifth planet from the sun and the largest in the solar system. It is a gas giant with a mass nearly 2. 5 times that of all the other planets in the solar system combined and slightly less than one …