The History of the Solar System: Jupiter
The next planet in is the largest, had Jupiter been any larger it may have lit up to become a star too but it is just a bit too small and is instead a stormy, electronic, red ball of gas, containing a cyclone three times the size of Earth that spins around it at tremendous speeds.
Europa, one of its moons has an ocean of liquid water separating its rocky core and icy surface. In this ocean heat rises like in the underwater volcanoes on Earth, icebergs float above. On another moon, Io, volcanoes explode releasing clouds of sodium above a rocky surface of yellow sulphur. Ganymede is the largest moon in the solar system and is bigger even than Mercury, it is a huge ball of ice and shines like a giant snow ball in the sky.