Gravity assistance describes the intentional use of the gravitational attraction of a celestial body, in order to modify the trajectory of a space vehicle. This maneuver allows the spacecraft to save rocket fuel.
Detailed Definition:
Etymology:
1. Gravity (Noun.), originating from the Latin word gravitatem,with the meaning of “weight, heaviness, pressure”
2. Assist (Verb.), originating from Latin word assistere,which means “standing by, help”
Sample Sentence(s):
“The global minimum velocity increments of direct transfer trajectory and gravity-assist trajectories are obtained for each candidate target.”