What does apoapsis mean?
The point in the orbit of a celestial body at which it is farthest from the body it is orbiting. In a hyperbolic trajectory, the apoapsis is the point of closest approach to the central body.
Example
"The spacecraft reached its apoapsis and began its journey back towards Earth."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.