In some sense, gravity does not exist; what moves the planets and the stars is the distortion of space and time.

In some sense, gravity does not exist; what moves the planets and the stars is the distortion of space and time.

在某种意义上，引力并不存在;推动行星和恒星运动的是空间和时间的扭曲。

-- Michio Kaku 高雄