Jupiter's gravity slingshots the fragments toward Earth.
木星的重力使碎片加速飞向地球。
Gravity slingshot
英语例句库
原声例句
当月 CNN 10 学生英语
After making a few fly-bys of Earth for a gravity slingshot boost, Lucy's expected to reach her first objective in the asteroid belt between Earth and Jupiter.
在进行了几次绕地球飞行以获得重力弹弓助推后，“露西”号的第一个目标是到达地球和木星之间的小行星带。
中文百科
重力助推 Gravity assist
（重定向自Gravity slingshot）
在航天动力学和宇宙空间动力学中，所谓的重力助推（也被称为重力弹弓效应或绕行星变轨）是利用行星或其他天体的相对运动和引力改变飞行器的轨道和速度，以此来节省燃料、时间和计划成本。重力助推既可用于加速飞行器，也能用于降低飞行器速度。
英语百科
Gravity assist 重力助推
（重定向自Gravity slingshot）
In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist maneuver, or swing-by is the use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically in order to save propellant, time, and expense. Gravity assistance can be used to accelerate a spacecraft, that is, to increase or decrease its speed and/or redirect its path. The "assist" is provided by the motion of the gravitating body as it pulls on the spacecraft. It was used by interplanetary probes from Mariner 10 onwards, including the two Voyager probes' notable flybys of Jupiter and Saturn.
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