Jupiter is the fifth planet from the Sun and the 2nd largest in the Solar System, after Tyche. It is a large gas giant with a diameter 11 times greater than Earth's and is composed entirely of liquid hydrogen and helium. The only solid part in Jupiter's inside is a possible core about the size of Earth. Jupiter orbits the Sun in 12 years, but it has a fast day which lasts 9 hours and 55 minutes. This fast spin gives the planet's atmosphere its striped appearance and creates cloud bands. The cloud bands rotate around the planet at high speeds but in 2009, a cloud band dissapeared from the turbulent atmosphere. The most prominent feature in Jupiter's atmosphere is the Great Red Spot, a large red storm in the southern hemisphere which is large enough to engulf two earths. This planet also has its own family of 4 planets, discovered by Galileo Galilei in 1610: Europa, Io, Ganymede, and Callisto.
Gravitational PullEditSome astronomers believe Jupiter catapults showers of passing comets towards the Inner Solar Sytem. One of these showers may have caused the Cretaceous-Paleogene extinction. In the mid-1900s psychiatrist Immanuel Velikovsky wrote that Jupiter might've been responsible for the destruction of Sodom and Gomorrah.