宇宙探秘:宇宙大爆炸(9)
Named for the groundbreaking astronomer, the Hubble Space Telescope allows us to look deep into the universe, back in time, and closer to the moment of the Big Bang. But for scientists, winding back the clock to the Big Bang was only the first step. When people first hear about the Big Bang theory, they say, well, where did it take place? It took place over there. It took place over there. Where did it take place? __________
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