Earth is a terrestrial planet orbiting the Sun, a yellow dwarf star, the third planet from the star. It is the homeworld of humans and other Earth lifeforms brought along with humans in Solar System colonisation and interstellar colonisation.
The existing storylines of the Revelation Space universe focus mostly on the Solar System colonies and the interstellar colonies of humanity. Earth and its future historical events are mentioned only rarely.
The Moon is the Earth's natural satellite.