Stephen Hawking applied Roger Penrose's singularity theorem to cosmology by reversing its direction in time, demonstrating that if black holes collapse into singularities, the universe must have originated from a similar singularityâthe Big Bangâthereby establishing a fundamental connection between black hole physics and the origin of the universe.
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The Night Hawking Solved the Big Bang đAñadido:
It was a conversation. Yes. You see, that was the first time I met Steven and he was he at that time he could walk and it was he the condition that he had didn't develop very far. So I didn't even know that there was anything wrong with him. But uh I think it was who was the who was the people who organized it? Well, Brandon Carter was there, but the person who organized the meeting was oh, he's gone out of my South Africanist, well-known church. I've gone out of my head right now, but anyway, he there was a meeting that I had with with with um Steven and I would describe the details of the singularity theorem that I had.
So I talked to Dennis to uh Stephen and and and these other people and uh Stephen picked up the ideas very quickly and developed them to try to apply them to cosmology. In fact he had a very idea which he immediately had using my particular theorem but turning it around and using it in a different context which I thought was pretty impressive.
But um that was how how we sort of got in contact originally. And then his thesis, this is um Stephen Steph Steven Hawings thesis was one of he was on four I think four or five different sections. They were all different topics and the last topic was on these singularity ideas which he had and uh it was a pretty impressive thesis. I think there was four different topics and I remember saying that any two of them would have be worth a PhD. Right. And the these singularities so this the the let's call it the black hole singularity the gravitational collapse singularity. Yes.
>> And the singularity, let's call it the big bang singularity.
>> That is what Steven, you see, Steven sort of turned my theorem around the other way to apply it the other way in time. So instead of you have something collapsing inwards as you have for a black hole, you think about the bang, a big bang which is things coming out. And the question is maybe it could have b from some previous collapse which swirled
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