Last Updated：2025/11/26

(astrophysics) The favorable alteration of the speed and trajectory of a spacecraft as a result of its passing near to a celestial body.

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gravity assist

Source Word

gravity assist

IPA(Pronunciation)

Japanese Meaning

宇宙船が天体の近傍を通過する際、その天体の重力を利用して、速度や軌道を有利に変化させる天体力学の手法。

The probe executed a gravity assist around Venus to gain velocity and redirect its trajectory toward the outer planets.

探査機は金星でスイングバイを行い、速度を稼いで軌道を外惑星へ向けて変えた。

Sense（1）

gravity assists

（ plural ）