威尔逊和彭齐亚斯捕捉人造卫星上反弹回来的无线电波的天线时不经意地发现了宇宙微波背景辐射，而这正是宇宙大爆炸的物理性证据。

And Wilson and Penzias discovered the cosmic microwave background radiation, physical evidence for the Big Bang, while fiddling with an antenna designed to catch radio waves bouncing off satellites.

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物理性证据是不会有差错的，它不会做伪证，它不会完全消失。

Physical evidence cannot be wrong, it cannot perjure itself, it cannot be wholly absent.

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