宇宙大爆炸是由宇宙中红移现象而推论得出的，宇宙在加速膨胀是有事实依据的，因此得出宇宙是由大爆炸中产生的结论，这些数据会激发人们无数的遐想，不可否认，人类已经开始了探索宇宙的新的旅程，这个过程肯定是刺激的。或许有一天人们发现红移现象是由另外原因产生的，那么大爆炸说就瞬间瓦解了。

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Billions and billions of galaxies, the universe is so vast. We can’t even imagine what those numbers mean. But 14 billion years ago, none of these existed until the Big Bang.

-The Big Bang is the origin of space and the origin of time itself.

We take a journey through space and time, from the beginning to the end of the universe itself.

This is our world – cities, forests, oceans, people. Everything in the universe is made from matter created in the first seconds of the Big Bang. Every star, every planet, every atom, every glade of grass, every drop of water.

-Water is ancient. The hydrogen atoms in here were born moments after the Big Bang, then came everything else.

The Big Bang is the defining event of our universe and everything in it. The secrets of our past, our present and our future are locked inside this one moment in time. To unlock the secrets of the Big Bang, we have to travel outside of our own solar system, and journey beyond even our own galaxy. As we travel into deep space, we are actually seeing into the past and getting closer to being able to witness the dawn of time itself, passing the first infant galaxies and the first stars.

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We arrive back at the moments the universe began, and face the biggest questions in all of science.

-This is the Holy Grail of Physics. We want to know why it banged. We want to know what banged. We want to know what was there before the bang.

To get the answers, we’ve built machines the size of cities to simulate conditions when the universe was created, and space telescopes to peer deep into our past.

-We’re getting close to answering the age old questions – why are we here, where did we come from, does the universe, in fact, has a beginning or an end, and the soul, what are they like. If we find the answer to that, it would be the ultimate triumph of human reason. We would know the mind of God.

The origin of the Big Bang is the greatest mystery of all time. And the more we learn, the deeper the mystery becomes.

-We like to think that our universe is unique. However, now we are not so sure. Perhaps, there is a multi-verse of universes. Another possibility is that our Big Bang is just one of many Big Bangs. But it may be one of just an infinite number/ of universes and there may be other regions and that infinite number of universes where Big Bang is just happening today.

But there is only one universe we are sure of, and understanding this one is hard enough. Since the late 1920s, everything we know about how our universe works has been turned upside down.

-It’s important to realize how much our picture of the universe is changing in the last century. At the beginning of the 20th century, the conventional wisdom in science was that the universe was static and eternal.

In 1929, that all changed. At the Mount Wilson Observatory above L.A., astronomer Edwin Hubble discovered galaxies aren’t stuck…