translation.en: One of the most important consequences of Einstein's general theory of relativity was the discovery that the universe began as a rapid expansion of space and time 13.8 billion years ago, the Big Bang.
translation.zh: 爱因斯坦的广义相对论带来的 最重要的结果之一, 就是对于空间与时间从138亿年前 开始急速膨胀的发现， 也就是宇宙大爆炸。