Earth is a planet in the Sol system which is the homeworld of the Human species. Earth became uninhabitable a little over 200 years before the start of the Wayfarers series.

An orbital habitat ring encircles Earth, home to the Samsara project, a human-led reclamation project.

The mother of the character Jenks from The Long Way to a Small, Angry Planet now works on the ring but once lived on Earth in a Survivalist clan.