translation.en: Every foot of distance you look away, or every foot of distance an object is away, you're looking back about a billionth of a second in time, and this idea or this notion of looking back in time has revolutionized our ideas about the universe, not once but multiple times.
translation.zh: 我们望出去的每一尺距离， 或者一个物体离去的每一尺距离， 你看到的都是十亿分之一秒之前的画面。 而这一概念，或者说时间回溯的概念， 彻底地改变了我们对宇宙的认知。 不是一次，而是好多次。