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In the 14 billion years since the Big Bang, galaxies have been created, filled with stars, planets, and moons, and the universe has been expanding the whole time.
大爆炸以后的140億年里，包羅萬象的星河創(chuàng)生了，它囊括了無數(shù)的恒星，行星以及衛(wèi)星。宇宙還在不停地膨脹。
We’ve learnt space is quite big, at least a hundred and fifty billion light years across.
我們探究后得知太空非常遼闊，至少有1500億光年長。
The universe may be infinite; it might literally go on forever.
宇宙也許是無限；它可能會永遠(yuǎn)膨脹下去。
The answer is it doesn’t have to be anything, in principle, the universe could be infinite and there’s no outside. Or it could be closed on itself. It could be such if I looked far enough in that direction I see the back of my head.
原則上講宇宙有很多可能性，它可以是無限的，沒有盡頭，或者它是封閉的。很可能是這樣，如果朝一個方向觀察得足夠遠(yuǎn)，我可能會看見我的后腦勺。
We may never know the Big Bang produced a universe that goes on forever. But we do know that the Big Bang hasn't stopped yet.
我們不可能知道大爆炸形成的宇宙會不會永遠(yuǎn)膨脹下去。但是我們知道大爆炸還沒有停止。
The Big Bang is really continuing now, we are continuing to bang if you want in the sense the expansion of the universe is continuing.
現(xiàn)在大爆炸確實在繼續(xù)，宇宙確實在繼續(xù)膨脹，從這個意義上講，我們也會繼續(xù)爆炸。
One of the most astounding discoveries in the last few years has been the realization that our universe is not slowing down like we once thought, but is actually speeding up, is accelerating, is in a run-away mode. We now believe there’s something called dark energy, the energy of nothing that is pushing the galaxies apart, and is killing the universe.
過去的幾年里，最令人震驚的發(fā)現(xiàn)之一就是人類意識到，宇宙并沒有像我們想的那樣減速膨脹，而是在加速，以近乎逃跑的方式在加速?，F(xiàn)在我們相信宇宙間存有一種物質(zhì)叫做暗能量。這種能量會推離宇宙推，進而將其毀滅。
We can’t see this destructive force and we have no idea why it exists, but it could mean the end of everything created in the Big Bang. If dark energy continues pushing the universe apart, our milky-way galaxy could become a lonely outpost, a hundred billion years from now, most of our galactic neighbors will be out of sight. Stars will burn out, galaxies will grow dark, even atoms will tear apart. The birth of the universe, the Big Bang was over in a flash, but the death of our universe will take almost forever.
我們看不見這種破壞性的力量，我們也不知道它為何存在，但是它意味終結(jié)，大爆炸所創(chuàng)造的一切都會終結(jié)。如果暗能量繼續(xù)分離宇宙，我們的銀河系就會變成孤獨的前哨。再過1000億年，大多數(shù)比鄰的星系將會從視野里消失。恒星會燃盡，星系會黯然，就連原子也會分崩離析。宇宙的起源-大爆炸會在瞬間結(jié)束，但是宇宙卻差不多永遠(yuǎn)存在。
That great philosopher of the western world, Willie Allan, once said “eternity is an awful long time, especially toward the end”.
西方國家一位偉大的哲學(xué)家威廉·艾倫說過，“永恒是長的可怕的時間，尤其是在接近尾聲時?！?/p>
Figuring out how our universe will end is as dark a mystery as the Big Bang. It could collapse back in on itself like a balloon when the air is let out.
宇宙如何終結(jié)就如謎一樣黑暗的大爆炸。它可能會像氣球漏氣一樣坍塌回原形。
