So here's that same end result.

And so here we are.

This is what they look like.

And the crabs don't like it at all.

We're going to zoom in and zoom in.

They're roughly parts in a million.

You can see that, first, dark matter condenses in smaller clumps.

Light bulb, oddly enough, is something that you can just render very simply, there's not really much to it.

And you'll see there are all these filaments and structures and voids.

And then, we'll turn around on the second shortest axis and it will collapse along two axis and expanding a third one.

The cluster on the left here shows a cometary like thing which is a bow shock from a clump of stuff falling through.

His first patent was Improvment in electric lamps but he did produced the first commercially viable lamp after trying 6000 diferent materials for the filament

By about redshift 5.7, at which point, the universe is roughly a billion years old.

On the other hand.

Thomas Edison went through thousands of unlikely substances before he came upon the right one for the filament of his electric light bulb.

And we're going to fly around, and we'll fly around, and you'll see occasionally a couple of filaments intersect, and you get a large cluster of galaxies.

Finally, the third axis turns around and the, that's really cluster collapses along that. and it will become, again, a quasi spherical object in the end.

Now zooming in Mimics expansion of the universe, and as you can see that there is a gradual condensation of material into these filaments.

And the topology of the density fluctuations will always go from there are actual blobs which first collapse into the sheets, which then collapse into filaments, which then drain into an quasi spherical blobs like clusters.

So by large scale structure, we talk about galaxy groups, filaments, clusters, sheaths, superclusters, and that is what we'll be addressing now.

If we are still in a linear regime, that is, low density, contrast, galaxies are slowly falling toward some filament or sheet, then the opposite will happen, there will be some intrinsic width of that filament on the skies, it's perpendicular through our line of site.

So, even in the deepest redshift survey measurements over very small fields going very deep, pencil being surveys, we see spikes, as you may recall by having pencil being survey going through large scale structure, spikes correspond to intersections with filaments or void in sun.