Jupiter
The largest planet in the solar system. It is so big that more than 1300 Earths could fit inside it. Jupiter is covered by swirling clouds of hydrogen, helium and ammonia. Jupiter has many storms raging on the surface, most notably the big red spot which is the largest hurricane in our Solar System. It's been raging for over 300 years. Jupiter has a very strong magnetic field, you would weigh two and a half times as much as you would on Earth.
The temperature on Jupiter is around -230 degrees because Jupiter is very away from the heat of the sun. It takes Jupiter 12 Earth years to orbit the sun, however as Jupiter orbits very slow around the sun compared to Earth, it rotates very fast. 1 day on Jupiter last for about 10 hours, compared to Earths 24 hours. Jupiter has many moons circling around it. Four of these moons are bigger than Pluto.
Jupiter has a thin ring system. Its rings are composed mainly of dust particles ejected from some of Jupiter’s smaller worlds during impacts from incoming comets and asteroids. The ring system begins some 92,000 kilometres above Jupiter’s cloud tops and stretches out to more than 225,000 km from the planet. They are between 2,000 to 12,500 kilometres thick.
Eight spacecraft have visited Jupiter. Pioneer 10 and 11, Voyager 1 and 2, Galileo, Cassini, Ulysses, and New Horizons missions. The Juno mission is its way to Jupiter and will arrive in July 2016. Other future missions may focus on the Jovian moons Europa, Ganymede, and Callisto, and their subsurface oceans.