Jupiter is the largest planet of the Solar System. Its mass corresponds to almost 75% of the mass of all the planets in the Solar System. For example, its mass is 318 times the mass of Earth, 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 , plus be, in terms of volume, 1317 times larger than the Earth).
Jupiter is a gaseous planet, made up mainly of hydrogen and helium, without a defined interior surface. Its core is composed of frozen gases from which gases (hydrogen and some helium) come out that form a dense atmosphere. The movement of the clouds in this atmosphere generates a band that covers its surface.
Like the rest of the outer or gaseous planets, Jupiter has rings although they are much less bright than those of Saturn. They are rocky fragments, which makes these rings very dark and cannot be seen from Earth.
A Jupiter currently known him to 79 satellites, although four of them, discovered by Galileo Galilei in 1610, are the most important:
- Io: It is the closest satellite to Jupiter. The great gravitational attraction that Jupiter exerts causes tides that cause a very active volcanism.
- Europa: It is covered by ice, and an ocean of liquid water is believed to exist under a crust of ice.
- Ganymede: It is the largest satellite in the entire Solar System.
- Calixto: It is the furthest satellite from Jupiter.
By NASA/JPL/University of Arizona (http://photojournal.jpl.nasa.gov/catalog/PIA02873) [Public domain], via Wikimedia Commons