TED演讲之伟大预言 马丁·里斯:这是我们最后的世纪吗?(2)

On a still bigger scale, we see entire galaxies of stars. We see entire ecosystems where gas is being recycled.


And to the cosmologist, these galaxies are just the atoms, as it were, of the large-scale universe.


This picture shows a patch of sky so small that it would take about 100 patches like it to cover the full moon in the sky.


Through a small telescope, this would look quite blank, but you see here hundreds of little, faint smudges.


Each is a galaxy, fully like ours or Andromeda, which looks so small and faint because its light has taken 10 billion light-years to get to us.


The stars in those galaxies probably don’t have planets around them.


There’s scant chance of life there — that’s because there’s been no time for the nuclear fusion in stars to make silicon and carbon and iron, the building blocks of planets and of life.

存在生命的可能性甚微 – 因为在那无足够的时间允许恒星进行核聚变,产生行星和生命所必需的构造元素,如硅、碳和铁等。

We believe that all of this emerged from a Big Bang — a hot, dense state.

我们相信所有这一切都源于一次大爆炸 – 一个极热、极密态。

So how did that amorphous Big Bang turn into our complex cosmos?


I’m going to show you a movie simulation 16 powers of 10 faster than real time,


which shows a patch of the universe where the expansions have subtracted out.


But you see, as time goes on in gigayears at the bottom, you will see structures evolve as gravity feeds on small, dense irregularities, and structures develop.


And we’ll end up after 13 billion years with something looking rather like our own universe.


And we compare simulated universes like that — I’ll show you a better simulation at the end of my talk — with what we actually see in the sky.

这样可以供我们对两者进行比较 – 在我的发言结束时我会向大家展示一个更好的模拟 – 用我们实际从天空看到的样子。

Well, we can trace things back to the earlier stages of the Big Bang, but we still don’t know what banged and why it banged.





您的电子邮箱地址不会被公开。 必填项已用*标注