TED 英语演讲:我们从何而来 演说题目:Questioning the universe 演说者:Stephen Hawking There is nothing bigger or older than the universe
The questions I would like to talk about are: one, where did we come from
How did the universe come into being
Are we alone in the universe
Is there alien life out there
What is the future of the human race
没什么比宇宙更广阔更久远的了
你们的问题中我想聊一下的是:你我何从
宇宙中就只有我们
有外星异生物么
人类的未来将会如何
Up until the 1920s, everyone thought the universe was essentially static and unchanging in time
Then it was discovered that the universe was expanding
Distant galaxies were moving away from us
This meant they must have been closer together in the past
If we extrapolate back, we find we must have all been on top of each other about 15 billion years ago
This was the Big Bang, the beginning of the