或者，膨胀可能是宇宙冷融合的一个结果。
它又冷又硬，在他漆黑一团的宇宙中它什么也不象。
It was cold and hard, and like nothing else in his black universe.
就像这样，通过观察氢原子，我们能够知道宇宙中暗物质有多冷，也即指示暗物质的温度。
So just like that, from looking at hydrogen, we can tell how cold our Universe's dark matter has to be. And that's how hydrogen teaches us the temperature of dark matter!
球状物是由气体、分子和宇宙尘埃组成的冷云团，他太密集并阻挡了后面的所有的光。
The globule is a cold cloud of gas, molecules and cosmic dust, which is so dense it blocks all of the light behind it.
球状物是由气体、分子和宇宙尘埃组成的冷云团，他太密集并阻挡了后面的所有的光。
The globule is a cold cloud of gas, molecules and cosmic dust, which is so dense it blocks all of the light behind it.
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