一切美好的事物都一定会走到尽头，其中包括我们的宇宙本身。
All good things must come to an end, and that includes our Universe itself.
时间与空间的弯曲贯穿整个宇宙，其中的起伏就是重力波，它自起源处向外散发。
Gravitational waves are fluctuations in the curvature of space and time which propagate through the universe as gravitational waves — outward from its source.
爱因斯坦用四度空间来描述我们的宇宙：其中三个是空间的，还有一个是时间的。
Einstein described our universe in four dimensions: the three dimensions of space and one of time.
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