Brian Cox

You go to this thing called the singularity once you've crossed the horizon. And you are going to that thing. And then the question arises, what is that thing? And one answer is we don't know. But in Einstein's theory, it's the end of time.

You go to this thing called the singularity once you've crossed the horizon. And you are going to that thing. And then the question arises, what is that thing? And one answer is we don't know. But in Einstein's theory, it's the end of time.

So one way of picturing what's happened here is so distorted is space and time by the collapse of a star or the collapse of loads of stuff to make these big supermassive black holes. We don't quite know how they form, actually, but it's collapsing stuff. So it distorts space and time so much. that in a real sense, they kind of flip over. They get mixed up.

So one way of picturing what's happened here is so distorted is space and time by the collapse of a star or the collapse of loads of stuff to make these big supermassive black holes. We don't quite know how they form, actually, but it's collapsing stuff. So it distorts space and time so much. that in a real sense, they kind of flip over. They get mixed up.

So one way of picturing what's happened here is so distorted is space and time by the collapse of a star or the collapse of loads of stuff to make these big supermassive black holes. We don't quite know how they form, actually, but it's collapsing stuff. So it distorts space and time so much. that in a real sense, they kind of flip over. They get mixed up.

And so this singularity, which you might have thought of as the point to which this thing collapsed, this infinitely dense point, you might think. But actually, more correctly to be seen as the end of time. Because everything's got mixed up. So you go to the end of time. And it's just like saying, why can't I escape that thing? It's like, why can't we escape tomorrow? So we are going to tomorrow.

And so this singularity, which you might have thought of as the point to which this thing collapsed, this infinitely dense point, you might think. But actually, more correctly to be seen as the end of time. Because everything's got mixed up. So you go to the end of time. And it's just like saying, why can't I escape that thing? It's like, why can't we escape tomorrow? So we are going to tomorrow.

And so this singularity, which you might have thought of as the point to which this thing collapsed, this infinitely dense point, you might think. But actually, more correctly to be seen as the end of time. Because everything's got mixed up. So you go to the end of time. And it's just like saying, why can't I escape that thing? It's like, why can't we escape tomorrow? So we are going to tomorrow.

And if I said to you, let's run away from tomorrow, you'd go, I can't run away from tomorrow.

And if I said to you, let's run away from tomorrow, you'd go, I can't run away from tomorrow.

And if I said to you, let's run away from tomorrow, you'd go, I can't run away from tomorrow.

Is that the idea? If you draw the thing, you can draw a map of it, and it just literally time ends, just purely in Einstein's theory. This is 1915, his theory of general relativity. You just get a line there, a line that says there's no future beyond this line. It just stops. Okay. So, I mean, admittedly, that's not... We think there's a lot more to it than that.

Is that the idea? If you draw the thing, you can draw a map of it, and it just literally time ends, just purely in Einstein's theory. This is 1915, his theory of general relativity. You just get a line there, a line that says there's no future beyond this line. It just stops. Okay. So, I mean, admittedly, that's not... We think there's a lot more to it than that.

Is that the idea? If you draw the thing, you can draw a map of it, and it just literally time ends, just purely in Einstein's theory. This is 1915, his theory of general relativity. You just get a line there, a line that says there's no future beyond this line. It just stops. Okay. So, I mean, admittedly, that's not... We think there's a lot more to it than that.

Well, that's the thing. So we're starting to get hints about what might happen, which is leading us. So to backtrack a bit, why does this calculation Stephen did, why does it say there's no information in this radiation? The thing is, it's coming from the horizon. So there's loads of ways to think about it.

Well, that's the thing. So we're starting to get hints about what might happen, which is leading us. So to backtrack a bit, why does this calculation Stephen did, why does it say there's no information in this radiation? The thing is, it's coming from the horizon. So there's loads of ways to think about it.

Well, that's the thing. So we're starting to get hints about what might happen, which is leading us. So to backtrack a bit, why does this calculation Stephen did, why does it say there's no information in this radiation? The thing is, it's coming from the horizon. So there's loads of ways to think about it.

But one way is that this weird place, this point of no return in space that you can fall through, but it's a point of no return. It sort of shakes. It almost disrupts the vacuum of space and sort of almost shakes particles out of the vacuum. That's one way of thinking about it. But this radiation is coming from the vacuum. It's coming from empty space.

But one way is that this weird place, this point of no return in space that you can fall through, but it's a point of no return. It sort of shakes. It almost disrupts the vacuum of space and sort of almost shakes particles out of the vacuum. That's one way of thinking about it. But this radiation is coming from the vacuum. It's coming from empty space.

But one way is that this weird place, this point of no return in space that you can fall through, but it's a point of no return. It sort of shakes. It almost disrupts the vacuum of space and sort of almost shakes particles out of the vacuum. That's one way of thinking about it. But this radiation is coming from the vacuum. It's coming from empty space.