A trans-Earth injection (TEI) is a propulsion maneuver used to set a spacecraft on a trajectory which will intersect the Earth. The maneuver is performed by a rocket engine. The spacecraft is usually in a parking orbit around the Moon at the time of TEI, in which case the burn is timed so that its midpoint is opposite the Earth`s location upon ar....
Found on
http://en.wikipedia.org/wiki/Trans-Earth_injection
The firing of a spacecraft's engines to increase speed and break out of an orbit around the Moon, or another planet, and begin it on a trajectory to Earth.
Found on
http://www.braeunig.us/space/glossary.htm
No exact match found.
