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The original project began because we know the universe is expanding. Everybody had assumed that gravity would slow down the expansion of the universe and everything would come to a halt and collapse. The big surprise was it was actually speeding up.
最初的计划开始是因为我们知道宇宙在膨胀。每个人都认为引力会减缓宇宙的膨胀，一切都会停止并坍塌。最令人惊讶的是它实际上在加速。