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gravitational-slingshot

noun

gravity assist.

Dictionary.com Unabridged

noun

the technique of using the energy of a gravitational field and the orbital velocity of a planet to change the speed and trajectory of a spacecraft.

Also called gravitational slingshot.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Gravitational-slingshot is always a great word to know.

So is quincunx. Does it mean:

a fool or simpleton; ninny.

an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.

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"The human head is bigger than the globe. It conceives itself as containing more. It can think and rethink itself and ourselves from any desired point outside the gravitational pull of the earth. It starts by writing one thing and later reads itself as something else. The human head is monstrous."

-Günther Grass

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