There is nothing bigger or older than the universe
世界上没什么比宇宙更广大更久远的了。
The questions I would like to talk about are:
你们提出的问题中我想聊一下的是：
One,where did we come from?
我生从何来？
How did the universe come into being?
宇宙何来？
Are we alone in the universe?
茫茫宇宙中只有我们吗？
Is there alien life out there?
外星人存在吗？
What is the future of the human race?
人类的的未来将导向何方？
Up until the 1920s,everyone thought the universe was essentially static and unchanging in time.
上世纪九十年代以前，所有人都以为宇宙基本上处于稳态，流金岁月，持恒不变。
Then it was discovered that the universe was expanding,
然后我们发现宇宙一直在不停地膨胀。
Distant galaxies were moving away from us.
辽远星系一直在飞离我们。
This meant they must have been closer together in the past.
这意味着它们必定曾相靠近。
If we extrapolate back,we find we must have all been on top of each other about 15 billion years ago.
我们若往后推算，就会发现我们必都曾於约150亿前相互堆叠在一起。
This was the Big Bang,the beginning of the universe.
这就是‘霹雳大爆炸’-宇宙之始。
But was there anything before the Big Bang？
然而大爆炸之前有什么吗？
If not,what created the universe?
若是没有，又是什么创造宇宙呢？
2028