Brian Cox - What Was There Before The Big Bang?

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Published 2023-01-07
Brian Cox - What Was There Before The Big Bang?

Physicist and professor of particle physics Brian Cox explains hypotheses about the causation of the big bang. Brian Cox is a brilliant scientist who makes complex cosmological concepts like the big bang way more easy to understand.

In the beginning, there was an infinitely dense, tiny ball of matter. Which started to expand and would eventually give rise to the atoms, molecules, stars and galaxies we see today.
But what was there before the big bang? What was the state of the universe before...Well, everything?

Brian Cox explains how inflation fueled by a mysterious form of energy that permeated empty space itself, left the universe desolate and cold. And only after that did the hot, dense conditions of the Big Bang emerge.

If cosmic inflation correctly describes what happened before the Big Bang, it may push the ultimate answer to the question of where we came from beyond the reach of science.

Brian Cox also mentions alternative theories to cosmological inflation which tell us what caused the initial conditions that would eventually give rise to the big bang.

The twin pillars of modern physics are Einstein’s General Relativity and quantum theory.
To understand how the big bang emerged and what came before it, it is essential to unite Einstein’s theory with quantum theory.

The most distant objects in the Universe are 47 billion light years away, making the size of the observable Universe 94 billion light years across.

If you are wondering, how can the observable universe be larger than the time it takes light to travel over the age of the Universe? The answer is because the universe has been expanding during this time.

And this causes very distant objects to be further away from us than their light travel time.
Most scientists think the entirety of the universe extends way beyond the observable universe. But is there anything beyond the entirety of the universe?

Brian Cox also explains if there is anything beyond our known universe and how it will "end".

#bigbang #space #science

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All Comments (21)
  • You can witness exponential inflation right here in the UK. It's pretty scary.
  • @foley15136
    I can’t help but wondering about further and further back and the question that’s always asked; why is there anything at all? And this question; Is it possible for there to be nothing? Possible for there to be no universes? Also, possible for whatever brought about the universes to not exist. My brain breaks with the infinite regress.
  • @kdh3706
    I like that he starts with "what we think happened". It takes more courage and confidence to admit that you don't know for sure than to insinuate that you do when its impossible to know for sure.
  • Brian Cox is probably the best in the world in explaining physics to the general audience. I love this guy. If I had children I would force them to watch him at least once a week ;)
  • I’m still having a problem wrapping my mind around the idea the entire universe existed in an infinitely small point that exploded.
  • @george1la
    I am 76 and astronomy has changed so much since then. My dad was one of the original Stony Ridge Observatory members. I went to all the meeting with him over the years while it was being built guided by George Carroll. Since we have had major telescopes in space and especially now our knowledge of reality of what is really going on is incredible and far beyond what was known back then. This certainly made me think again. Thanks. As Steve Morris, of high horsepower engines says, "Danger, Watch this and you might learn something." So glad to learn.
  • @Nordic_Lite
    So nice to going back cooking dinner after the video. Pasta, chicken, vegetables - I can see them, hold them and count them. What a relief! ))
  • @bst857
    It's really weird sometimes to be sat at my computer, and be immersed in whatever I'm doing, and suddenly remember space is out there. I mean most things in day to day life you could say are fairly mundane, but space is almost cartoonishly wacky in its immensity and mystery, and its right there in the sky. We should all be going around with our eyes out on stalks over how ridiculous it is, but we just kind of get used to it and it only seems amazing every now and then when we actually think about it. Another funny thing is that most animals don't even know about space, like for example dogs, they don't think much beyond the general area that they're in, and they will never look up at the stars and question what's going on up there. It makes me wonder if we do the same, and we just don't realise it - maybe we just cannot get over the human condition enough to truly understand it, maybe there is something, that to some aliens, is obvious, and we just can't see it. I guess it's possible that AI could break through this, and figure things out that we hadn't considered.
  • @chas4life
    I am always amazed when I learn of nearly incomprehensible Cosmic events like the start of our universe. It's enough to make me wonder why "intelligent" life that was gifted a planet with all the resources needed for survival could be so petty as to fight amongst ourselves the way we do. What a gift we humans were given so long ago.
  • just the fact that were aware enough to ask these questions is amazing in its self.what a species!!!
  • @jeffford181
    How can Brian sleep at night with all this going on in his mind?
  • @10_vittesse
    I have this thought that the universe is always expanding and shrinking and restarting every time. From a singularity to a very big expansion and again shrinking to a singularity that expands again. Edit: since the space and time are relative, if space started contracting (opposite of expansion) time will start going the opposite sens getting us back to origine of the universe again
  • @suryansh775
    I have a Doubt: If there are infinite Universes does that mean there is infinite amount of matter ?
  • @johnniehh
    This is the stuff that kept me up at night as a young boy. If there was a beginning of the universe then what was before, etc. Good job Brian!
  • @rodnyg7952
    I like when scientists use words like "theoretically", "hypethetically" and "essentially" to add excitement and intrigue to their story telling
  • @willburrows8834
    There was no “before” the Big Bang because to have a “before” you have to have time and the concept of time only exists within our universe, which only exists after the Big Bang. So you have to theorise what existed in a condition that is impossible to understand because the rules that apply to our universe did not exist.
  • @yorha2b278
    Before the big bang was a huge stomach ache.