Planet Earth is part of a Solar System that revolves around the Sun. Our Solar System is located in the Milky Way, which is located in a local group of galaxies, which is located in the Virgo Supercluster, which is located in the Observable Universe. Which means, we are smaller than we think we are! Many years ago, people thought that the Earth was in the center of the universe. They believed in a Celestial Sphere, which is an ancient theory that stars are just points of l