Janna Levin

Yeah. Dark matter is localized in space. So it clumps. I mean, it doesn't clump a lot, you know, but I mean, it's around the galaxy, right? It's in a halo around the galaxy.

Yeah. Dark matter is localized in space. So it clumps. I mean, it doesn't clump a lot, you know, but I mean, it's around the galaxy, right? It's in a halo around the galaxy.

Oh, it's really compelling.

Oh, it's really compelling.

Oh, it's really compelling.

I mean, you see these images of galaxies, clusters that pass through each other. And you can see where the light is, the luminous matter is distributed. And then by looking at the gravitational lensing, which...

I mean, you see these images of galaxies, clusters that pass through each other. And you can see where the light is, the luminous matter is distributed. And then by looking at the gravitational lensing, which...

I mean, you see these images of galaxies, clusters that pass through each other. And you can see where the light is, the luminous matter is distributed. And then by looking at the gravitational lensing, which...

shows you where the actual mass is distributed so that light bends around the most massive parts in a particular way so you can reconstruct where the mass is gravitationally quite separate from looking at the luminous matter, which is not dark, and they are separate.

shows you where the actual mass is distributed so that light bends around the most massive parts in a particular way so you can reconstruct where the mass is gravitationally quite separate from looking at the luminous matter, which is not dark, and they are separate.

shows you where the actual mass is distributed so that light bends around the most massive parts in a particular way so you can reconstruct where the mass is gravitationally quite separate from looking at the luminous matter, which is not dark, and they are separate.

Because the stuff, as they pass through each other, the interacting stuff, the luminous stuff collides and gets stuck, and you can see it colliding and lighting up. The dark stuff, which by definition it's dark because it doesn't interact, passes right through each other, right? And this is, I mean, it's so compelling.

Because the stuff, as they pass through each other, the interacting stuff, the luminous stuff collides and gets stuck, and you can see it colliding and lighting up. The dark stuff, which by definition it's dark because it doesn't interact, passes right through each other, right? And this is, I mean, it's so compelling.

Because the stuff, as they pass through each other, the interacting stuff, the luminous stuff collides and gets stuck, and you can see it colliding and lighting up. The dark stuff, which by definition it's dark because it doesn't interact, passes right through each other, right? And this is, I mean, it's so compelling.

And there's lots of other observations, but that one is just, before you just look at it, you can see that the mass is distributed differently than the interacting luminous matter.

And there's lots of other observations, but that one is just, before you just look at it, you can see that the mass is distributed differently than the interacting luminous matter.

And there's lots of other observations, but that one is just, before you just look at it, you can see that the mass is distributed differently than the interacting luminous matter.

Dark energy is much harder to get a hold of. I mean, the Higgs field could have also explained dark energy, if you've heard of the God particle. I don't know if you know, originally Leon Letterman co-authored a book and he wanted to call it the goddamn particle because they couldn't find it.

Dark energy is much harder to get a hold of. I mean, the Higgs field could have also explained dark energy, if you've heard of the God particle. I don't know if you know, originally Leon Letterman co-authored a book and he wanted to call it the goddamn particle because they couldn't find it.

Dark energy is much harder to get a hold of. I mean, the Higgs field could have also explained dark energy, if you've heard of the God particle. I don't know if you know, originally Leon Letterman co-authored a book and he wanted to call it the goddamn particle because they couldn't find it.