由于光线更老，所以它所显示的是宇宙历史中较早的时期。
Since this light is older, it represents an earlier epoch in the universe's history.
天体物理学家坚信，他们发现了那些在宇宙诞生时期的恒星们所发出的微弱光晕。
Astrophysicists believe they've spotted a faint glow from stars born at the beginning of time.
由于氢原子阻拦光线，年轻的宇宙进入了“黑暗时期”。
Because hydrogen atoms trap light, the young universe entered its "dark ages."
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