What is the Great Red Spot? The Great Red Spot is a storm that moves around on planet Jupiter; it measures approximately 40,000 km long and 14,000 km wide (You could fit three Earths in side it). It’s been raging for over three hundred years.
Distance from the Sun 778 million km (483.5 million miles).
Jupiter has 79 moons. The most well-known moons are Io, Europa, and Callisto. Jupiter also has the biggest moon Ganymede. These moons are so big you can see them with just a pair binocular.