365bet中国官方网站

  • word of the day

    gravity-assist

    gravity-assist - 365bet中国官方网站 definition and meaning for word gravity-assist

    Definition
    (noun) (spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its gravitational field

  • Word used in video below:
    text: ADULT SHELDON: I didn't have the physical stature to assist
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