The idea of dark energy was dreamed up ten years ago, to explain why the expansion of the universe that began with the Big Bang seems to be accelerating, rather than slowing down.
暗能的概念是十年前创造出来的，为了解释为什么宇宙的扩张自大爆炸开始后是加速的，而不是慢下来。
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According to the big bang model, our universe is made up of around 4% of normal (atomic) matter; 22% dark matter and 74% dark energy.