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We find them smaller and fainter, in constantly increasing numbers, and we know that we are reaching into space, farther and farther, until, with the faintest nebulae that can be detected with the greatest telescopes, we arrive at the frontier of the known universe.
我们发现它们越来越小，越来越模糊，而且数量还在不断增加，我们知道我们正在进入太空，越来越远，直到有了最微弱的星云，我们可以用最大的望远镜探测到，我们到达了已知宇宙的边界。