• Jupiter spins faster than any other planet. Despite its huge size, it ... • Jupiter has 16 moons-four big ones, discovered by Galileo as long ago ... • The Great Red Spot or GRS is a huge swirling storm in Jupiter's ... • Very big. Even though Jupiter is largely gas it weighs 320 times as ... • No. Even if your spaceship could withstand the enormous pressures, ... • The solar wind is the stream of radioactive particles constantly ... • One night American astronomer Asaph Hall got fed up with studying ... • Mars is red because it is rusty. The surface contains a high ... • The Viking landers of the 1970s found not even the minutest trace of ... • Flares are eruptions from the Sun's surface that fountain into space ...