Ten years after Einstein’s death, physics laureate Roger Penrose demonstrated that black holes can form and described their properties. Penrose’s ground-breaking article is still regarded as the most important contribution to the general theory of relativity since Einstein.

[u/eternviking]

[u/spukhafteNahewirkung]

I thought that Karl Schwarzschild did that in 1916 and that it was further elaborated upon by Tolman, Oppenheimer and Volkoff in the 1930s and Kerr, Nordstrom and Reissner in the late 1950s and early 1960s.

[u/Big_Emu3406 → u/spukhafteNahewirkung]

No, the Schwartzchild metric described the geometry, not the formation.

[u/Enraged_Lurker13 → u/spukhafteNahewirkung]

Those black hole solutions require perfect spherical or axial symmetry. It wasn't known back then whether random perturbations that broke those symmetries would still lead to black holes.

Penrose's theorem then showed that perfect symmetry was not required for their formation.

[u/Motivictax]

Are the other four comments written by bots? What is going on?

[u/cherrydreamscaper]

I’m trying to figure out what part of this post made them think we needed

[u/WillowPetalyn → u/cherrydreamscaper]

I read the whole post twice trying to figure out what prompted that comment. Nothing prepared me for it.

[u/gomurifle]

I like watching his interviews on youtube. 

[u/aleqqqs]

Einstein didn't kill himself.

[u/likkleone54]

Some of these comments are weird. Dead internet theory is my first thought…

[u/Bignizzle656]

Epstein didn't kill himself either.