Earth

Earth is a planet of the solar system. Earth is moving around the star with the official name Sol but commonly reffered to as the Sun. Earth has one physical satellite with the name Luna (common "the Moon), however, it is argued that Earth and Moon are actaully a single system, since they both revolve around the common centre of mass, rather than one around the other.

3/4 of Earth surface is water. Humans live in the rest 1/4 and have polluted it so much that it is doubt whether future generations will be able to live normally.

There are many societies on Earth, most notable are these of humans, ants, bees etc.

Earth is 1 AU away from the Sun.