Pic: The Tribune Jupiter The largest planet in the Solar System is Jupiter, the fifth planet from the Sun. Along with Saturn, Uranus and Neptune. Jupiter is called a gas giant. These planets do not have a solid surface because they are not made of rock or other hard materials. What is Jupiter's red spot? The Great Red Spot or GRS is a huge swirling storm in Jupiter's atmosphere. It is 26,000 kilometres across and has been going on for at least 330 years. 'Spacecrafts have taken vivid images of the storm, with its red centre and wavy cloud formations.' How many moons does Jupiter have? Jupiter has 50 moons and 18 provisional moons. Many of them are very small, 47 are less than 10 kilometres in diameter. The four largest are called Io, Europa, Ganymede and Callisto. IO - 'It has more than 300 volcanoes, making it the most geologically active object in the solar system. Here an eruption can be see on its surface.' How big is Jupiter? Jupiter is very big. Even thoug
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