宇宙扩张是有史以来众多最重要的发现之一。
The expansion of the universe was one of the most important intellectual discoveries of all time.
宇宙扩张论科学家获诺贝尔物理学奖。
Scientists studying universe's expansion win Nobel Prize in physics.
因为宇宙已存在137亿年，宇宙扩张相应的延伸距离137亿光年则是任何方向可能观测到的最大值。
The universe being 13.7 billion years old, 13.7 billion light-years—duly stretched to allow for the expansion of the universe—is the maximum distance it is possible to see in any direction.
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