大爆炸之前是什么呢？我们所见到的万物是怎么样从什么都没有变到这一切呢？



These are only some of the most abstract and difficult concepts there are. So here's a mind-bender. What came before the Big Bang? The philosophers in ancient times used to say how could something arise from nothing? And what's amazing to me is that the laws of physics allow that to happen. __________ It's one of the biggest hurdles to understanding the Big Bang. First you have to buy into the premise that something was created out of nothing.

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And it means that our whole universe, everything we see, everything that matters to us today, could have arisen out of precisely nothing.