A lot of things in space give off infrared light too, like stars, nebulae, and galaxies.

太空中的很多东西也会发出红外线，例如恒星、星云和星系。

They pointed it toward the emptiest part of the sky they could: a spot with little or no stars, nebulae, or galaxies in it.

一个很少或根本没有星星、星云或星系的地方。

It's hard to imagine everything in the whole cosmos — every star, nebula, galaxy; every atom, electron, and proton — all squeezed together into one infinitely dense blob.

很难想象整个宇宙中的一切——每一颗恒星、每一个星云、每一个星系；每个原子、电子和质子——全都挤在一起，变成一个密度无限大的团。