The planet Jupiter is two and a half times larger than all the other planets of the solar system combined. It consists mainly of gases and therefore belongs to the gas giants. 1. Only the Sun, Moon and Venus are brighter than Jupiter in the Solar System. It is one of the five planets visible to the naked eye from Earth. 2. The first to describe their observations of Jupiter were the ancient Babylonians around the seventh century BC. Size of Earth compared to Jupiter 3. Jupiter has the shortes...