JUPITER If you see a really bright star in the sky it night it might not be a star at all It might be the giant planet Jupiter MIGHTY JUPITER Jupiter is the fifth planet from the Sun and the biggest of all the solar system planets It s so big that more than 1 300 Earths would fit inside it Jupiter s stormy atmosphere is divided into light and dark
GREAT RED SPOT Lots of storms race around Jupiter The biggest is called the Great Red Spot It was seen for the first time more than 300 years ago and it's still there today WHAT S IT MADE O The Great Red Spot is a vast storm bigger than Earth Jupiter is made mostly of hydrogen with some helium and other gases Under Jupiter s clouds the gas is squashed so hard that it changes into a liquid SPA
EXPLORING JUPITER OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO In 1610 Italian astronomer Galileo Galilei looked at Jupiter through a telescope and discovered its four biggest moons In recent years Jupiter and its moons have been explored by space probes GALILEO A spacecraft called Galileo spent eight years exploring Jupiter and its moons It was the fifth spacecraft to visit Jupiter The first four flew past Jupiter Galileo was the first to orbit it Galileo went into orbit around Jupiter on December 8
JUPITER's Moons Jupiter s four biggest moons are called Ganymede Callisto lo and Europa anymede lo Callisto Europa MINI PROBE O Galileo dropped a mini probe O into Jupiter's atmosphere As it fell it measured the temperature pressure and wind speed It lasted for an hour before it was destroyed by heat and pressure Jupiter s moon Ganymede is the biggest moon in the solar
