早期宇宙的最佳理论告诉我们，各种原子本应在宇宙大爆炸后的第一个5分钟内就已经成形。
OUR best theories of the early universe also tell us which atoms should have been forged in the first 5 minutes after the big bang.
理论预言，这个几乎无法理解的状态只存在了宇宙第一秒钟的极小一段时间。
This nearly incomprehensible state is theorized to have existed for just a fraction of the first second of time.
很可能你看到的是一艘低轨宇宙飞船反射的太阳光，因为这些航天器每90分钟左右绕地球一圈。
What you are seeing, most likely, is a spacecraft in low Earth orbit reflecting back sunlight as it circles the Earth once every 90 minutes or so.
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