When did the Universe Begin? - Professor Brian Cox #cosmology

The Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began. But what caused this explosion in the first place is still a mystery.

[deveyous]

Im so jealous of all the people who get to sit down and talk to Brian. How amazing would those conversations be...

[scott]

What terrifies you the most, Joe, an eternal universe or a finite universe?

“Bears”

[cgdavid]

Very few people think beyond themselves and the microscopic world they live in..

[johnpoppenhusen]

Most physists hate to even think about or even consider infinity but I think that some of them are beginning to reconsider this infinate status of existence.

[richarddavis]

Maybe just our little patch is 13.8 bil

[brianschuetz]

What's more frightening, an eternal universe or a finite one? Neither, because I'm going to die either way. My lifespan is a speck, a vapor in the span of time the universe covers.

It's still a fascinating question to ponder, though.

[joeb]

We are talking about time scale even longer that DMV time scale, to put things in perspective...

[bluebox]

I don't understand. The higher the density, the slower the time passes. Are they using linear extrapolation of galactic motion in the face of the fact that the closer they got together the slower time passed? Is that factored in?

Also, given the density of everything, how could the big bang not immediately collapse into a black hole? How is everything not inside a massive event horizon?

[wordswordswords]

I feel like there's always been something, you know. I mean WTF, my poor little brain can't handle this shit. I need some coffee.

[DaveT]

NOOOO. I had a comment that was long and I clicked to the next short by accident. I was talking about this video giving me an existential crisis because my mind tried to wrap itself around space and time at the same time. For a second it was like I was looking through my eyes but I felt like I was a mile away from my own eyes. I ended up with this example. I described it as a drawer in a cupboard. The area inside of an empty drawer always existed and then someone put a box around it but the space was always there and even when the box is removed, the area will still be there. DAMMIT my original comment was so much clearer but now that it's gone I'm stuck on the disappointment of losing it instead of trying to recreate it. I love how Brian speaks about this kind of thing so clearly and meanwhile my mind is blown every time he speaks because I just don't have the intelligence to take the information on board and understand it

[EmersonCarl-eq]

Is it cyclic? Exspands and contracts infinitely. What's scary is we'll never ever know.

[BrettHarrawood]

Has anyone proposed the idea that at the heart of every atom is a microscopic particle size black hole that is trapped at the center of every atom by larger-sized electrons that the black hole cannot intake and devour and is frozen by higher energy particles that block the black hole from any intaking of energy and locks the atom into its various forms and controls all atomic atoms and versions we see in the universe by its size? Freezing the atom's structure and configurations into what we see today?

[Frank]

Because the universe is expanding faster & faster, wouldn't we have to know how incrementally faster we are pulling apart from each other over time in order to establish the beginning, or have they factored that in already? The curious Geordie!

[Kimberly-zvgr]

I watched the movie Aniari this weekend. I’ve been depressed ever since. It destablized my security of purpose on earth and my life. Now I have to talk myself back into this bubble of not knowing. Too sad 😮

[Del]

What people fail to grasp and find difficult is that something is the default rather than nothing. It’s not that the universe sprang into existence - it was and has always been there. Additionally, the universe is predisposed to create and one of those things it creates is life.

[Gorgeous_Spirit]

I love this!! I believe it is eternal 💜💞

[Letts_prey]

We can imagine it going on forever, why does the past have to be any different to the future?

[Elaphe]

What one could also wonder about has to do with the process of going from pure energy, to individual consciousness.
(From "Big Bang" to the "self").
Can that process be accidental?
Can there be a causeless cause?
How is it possible that something, anything (like energy), always existed?

[MeanJackal]

At least time has always existed because it's illogical for time to begin

[FordSierraIS]

If it was very hot and very dense, sounds alot like the core of a sun right. And the universe has many of the features of a black hole..