Janna Levin

Everything on the right-hand side of Einstein's equations is how matter and energy are distributed in spacetime. On the left-hand side tells you how space and time deform in response to that matter and energy. And it can be impossible to solve some of those equations.

Everything on the right-hand side of Einstein's equations is how matter and energy are distributed in spacetime. On the left-hand side tells you how space and time deform in response to that matter and energy. And it can be impossible to solve some of those equations.

What was so amazing about what Churchill did is he found this very elegant, simple solution within like a month of reading this final formulation. But Einstein didn't go through and try to find all the solutions. He sort of gave it to us, right?

What was so amazing about what Churchill did is he found this very elegant, simple solution within like a month of reading this final formulation. But Einstein didn't go through and try to find all the solutions. He sort of gave it to us, right?

What was so amazing about what Churchill did is he found this very elegant, simple solution within like a month of reading this final formulation. But Einstein didn't go through and try to find all the solutions. He sort of gave it to us, right?

He shared this, and then lots of people since have been scrambling to try to, ah, I can predict the curvature of the spacetime if I tell you how the matter and energy is laid out. If it's all compact in a spherical system like a sun or even a black hole, I can understand the curves in the spacetime around it. I can solve for the shape of the spacetime.

He shared this, and then lots of people since have been scrambling to try to, ah, I can predict the curvature of the spacetime if I tell you how the matter and energy is laid out. If it's all compact in a spherical system like a sun or even a black hole, I can understand the curves in the spacetime around it. I can solve for the shape of the spacetime.

He shared this, and then lots of people since have been scrambling to try to, ah, I can predict the curvature of the spacetime if I tell you how the matter and energy is laid out. If it's all compact in a spherical system like a sun or even a black hole, I can understand the curves in the spacetime around it. I can solve for the shape of the spacetime.

I can also say, well, what if the universe is full of gas or light and it's all kind of uniform everywhere? And I'll find a different, equally surprising solution, which is that the universe would expand. In response to that, that it's not static, that the distances between galaxies would grow. This was a huge surprise to Einstein. So all of these consequences of his theory, you know,

I can also say, well, what if the universe is full of gas or light and it's all kind of uniform everywhere? And I'll find a different, equally surprising solution, which is that the universe would expand. In response to that, that it's not static, that the distances between galaxies would grow. This was a huge surprise to Einstein. So all of these consequences of his theory, you know,

I can also say, well, what if the universe is full of gas or light and it's all kind of uniform everywhere? And I'll find a different, equally surprising solution, which is that the universe would expand. In response to that, that it's not static, that the distances between galaxies would grow. This was a huge surprise to Einstein. So all of these consequences of his theory, you know,

came with revelations that were not at all obvious when he first wrote down the general theory.

came with revelations that were not at all obvious when he first wrote down the general theory.

came with revelations that were not at all obvious when he first wrote down the general theory.

So if you think about 1905, when he's writing these sequence of unbelievable papers as a 25-year-old who can't get a job as a physicist, and he writes all of these remarkable papers on relativity and quantum mechanics. And then even in 1915-16, he does not know that there are other galaxies out there. This was not known. People had mused about it.

So if you think about 1905, when he's writing these sequence of unbelievable papers as a 25-year-old who can't get a job as a physicist, and he writes all of these remarkable papers on relativity and quantum mechanics. And then even in 1915-16, he does not know that there are other galaxies out there. This was not known. People had mused about it.

So if you think about 1905, when he's writing these sequence of unbelievable papers as a 25-year-old who can't get a job as a physicist, and he writes all of these remarkable papers on relativity and quantum mechanics. And then even in 1915-16, he does not know that there are other galaxies out there. This was not known. People had mused about it.

There were these kind of smudges on the sky that people... They contemplated what if there are other island universes, you know, going back to Kant thought about this, but it wasn't until Hubble, it really wasn't until the late 20s, that it's confirmed that there are other galaxies.

There were these kind of smudges on the sky that people... They contemplated what if there are other island universes, you know, going back to Kant thought about this, but it wasn't until Hubble, it really wasn't until the late 20s, that it's confirmed that there are other galaxies.

There were these kind of smudges on the sky that people... They contemplated what if there are other island universes, you know, going back to Kant thought about this, but it wasn't until Hubble, it really wasn't until the late 20s, that it's confirmed that there are other galaxies.