Jupiter

Jupiter, the fifth planet, is the largest planet in our solar system. Jupiter is

one of the outer planets. Jupiter is more than twice as massive as all the other

planets combined. Jupiter is the fourth brightest object in our solar system.

Jupiter's molten rock and iron core amounts to at least ten to fifteen

Earth masses. Jupiter is a dense ball of gas and therefore, there is not any solid

surface. Jupiter has a mass of about 1.900 kg, which is 318 times the mass of

Earth. The Great Red Spot (GRS) has been seen by Earth observers for more

than 300 years. The GRS is an oval, about 12,000 by 25,000 km. That is big

enough to hold two whole Earths. Jupiter has a huge magnetosphere field,

much stronger than Earth's . Its magnetosphere extends more than 650 million

km, that is past Saturn's orbit. Jupiter's moons all lie within its magnetosphere.

Jupiter has three rings called Halo, Main and Gossamer. They are very

much like Saturn's rings, but much fainter and smaller. Unlike Saturn's rings,

Jupiter's three rings are dark. They are probably composed of very small grains

of rocky material. Unlike Saturn's rings, they seem to contain no ice. Jupiter has

fourteen moons or satellites. The four largest are Io, Europa, Ganymede, and