What Is Cislunar Orbit?

Cislunar space (alternatively, cis-lunar space) is the volume within the Moon's orbit, or a sphere formed by rotating that orbit. Volumes within that such as low earth orbit (LEO) are distinguished by other names. ... Cis-lunar is Latin for "on this side of the moon" but also "not beyond the moon".

How big is Cislunar space?

The volume of space under consideration is huge and extends at least to ~2M km. Unless very close to Earth, trajectories are not circular, elliptical, or even planar.

What is a Cislunar economy?

When I talk about cislunar economy, I'm referring to economic activities taking place in space either on the Moon or in orbit around the Earth or the Moon. This is an important distinction, mainly because a “space economy” already exists, at least up to the geostationary belt (GEO).