Brian Cox - What Was There Before The Big Bang? | Nasa Video

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".
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