借助NASA的威金森微波各向异性探测器（WMAP），（已观测到）宇宙有137.5亿年的历史，原始氦元素的存在也首次被证明，同时能证明大爆炸之后存在暴胀期的关键证据也已被发现。

The Universe is 13.75 billion years old, primordial helium has been spotted for the first time and key evidence for the inflationary period immediately after the Big Bang has been found.

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