Nobel Winner Hans Bethe's Cosmic Element Puzzle #shorts

Added: 2026-05-17

[00:00:00]He won the Nobel Prize for that. He explained why the sun shines.

[00:00:03]>> Yes.

[00:00:03]>> That's a huge deal.

[00:00:04]>> That's pretty Hans Bethe was just ridiculous at math. The thing that he won his Nobel Prize for in 1967 is he figured out the birth of the elements.

[00:00:12]How are elements made inside stars? He discovered the proton-proton chain reaction, which is how the sun makes helium out of hydrogen and keeps us all alive. There's a very specific pathway where four protons have to come together to create a helium nucleus and a neutrino or I think two neutrinos that go out and a bunch of photons that go out. And there's specific pathways where like in the middle there's like a deuterium that happens. That entire process is what he figured out. And the mathematics of that process was exactly right for how big we know the sun is and how bright we know the sun is. All of the math was mathing, you know? Yep.

[00:00:45]Yep. He also discovered the CNO cycle, which is the carbon-nitrogen-oxygen cycle, which is how larger stars, you know, the blue stars, that's how they burn fusion. They go from carbon, then hydrogen and helium come in to become nitrogen, then it becomes oxygen, and then the oxygen spits out a helium nucleus to go back to carbon. And this cycle of carbon-nitrogen-oxygen is what powers those higher stars. You can't sustain that kind of luminosity with just proton-proton helium fusion. Right.

[00:01:15]Okay? Right.