Skydiving is a process of self gravity falling under, there is no such thing as a kind of sense of weightlessness.

跳伞是一种根据自身重力下坠的过程，所以没有所谓的那种失重感。

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But if enough good ones do, it stops being a self-indulgent choice, because the center of gravity of Silicon Valley will shift there.

但是如果很多好的创业公司都这么做，就不再是个奢侈的标志了，因为硅谷的吸引力就将转移到那里去了。

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First, the intact sun-like star (left) ventures too close to the black hole, and its own self-gravity is overwhelmed by the black hole's gravity.

首先，画面左侧是一颗冒险过于接近黑洞的类太阳恒星，此时黑洞的引力压倒了恒星的自身引力。

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Mr. RICHARD BINZEL (Astronomer): The word planet is strictly defined to be a body rounded by self-gravity, which has cleared its orbital zone.

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Over a decade ago he helped pioneer the idea of the cube-sat satellite that is a small self contained box that could ride with other such boxes in the payload of a rocket where it could conduct low gravity experiments, biological experiments of do other interesting activities when released into space.

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