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Short "hint"

n. - (spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its force field.

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Usage examples (7)
  • It used lunar gravity-assist to put it in orbit at the L2 point of the Sun-Earth system, 940,000 miles behind the Earth, with the Sun on the other side.
  • So much gravity, in fact, that they often need to use wheelchairs or other gravity-assist devices.
  • Engineers say the gravity-assist will increase Rosetta's speed by 3. 6km/s with respect to the Sun.
  • Engineers say the gravity-assist will have increased Rosetta's speed by almost 4km/s with respect to the Sun.
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