Jupiter

Jupiter is the largest planet in the solar system — more than twice the mass of all the other planets combined. This gas giant is famous for the Great Red Spot, a storm wider than Earth that has raged for centuries.

Jupiter spins faster than any other planet, completing a day in under 10 hours, and commands a huge family of moons, including the four large Galilean moons: Io, Europa, Ganymede and Callisto.

The numbers above give that scale in Earth units. A radius of 69,911 km makes Jupiter about eleven times wider than Earth, and 317.8 Earth masses is more material than every other planet in the solar system put together. Gravity at the cloud tops is 24.79 m/s², roughly two and a half times what you feel at sea level, so a person who weighs 70 kg here would press down with the force of about 175 kg there — assuming there were a surface to stand on, which there is not.

Despite that bulk Jupiter turns once every 9.9 hours, the fastest rotation of any planet, and that spin is what flattens it visibly at the poles and stretches its weather into the banded belts and zones you can see in the 3D view above. Sitting 5.203 AU from the Sun it receives only a few per cent of the sunlight Earth gets, which is reflected in the mean temperature of −108 °C, and its year lasts about 12 Earth years. Compare its position with the other giants in the 3D solar system simulator.