gravity assist(redirected from Gravity slingshot)
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Related to Gravity slingshot: Slingshot effect
gravity assistAn astronautical technique whereby a spacecraft takes up a tiny fraction of the orbital energy of a planet that it is flying past, allowing it to change direction and speed. It has been used, for example, in the Voyager and Ulysses missions.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006