A solar system consists of a star and the objects that orbit it. A galaxy contains millions of stars and solar systems. But how much do you know about our own Solar System? Take our quiz to find out!
Neptune is the furthest planet from the Sun. About 30 times further away than the Earth is. It is a blue giant planet like Uranus. These planets are also called ice giants. They are made of mostly water, methane and ammonia ice, with a small rocky core.