All atoms higher than hydrogen come from stars. So in the end, everything is derived from fusion. Therefore, geothermal and fission can only exist because of nuclear fusion.
Comment on World now has five times more PV than nuclear power
booly@sh.itjust.works 3 months agoSo is biomass. And wind. And fossil fuels. And hydro.
In fact, I think only geothermal and fission aren’t fusion-based.
Wrufieotnak@feddit.org 3 months ago
MonkderVierte@lemmy.ml 3 months ago
Fossil fuel is by extension of extension. Fission by extension of extension of extension.
MouseKeyboard@ttrpg.network 3 months ago
Fission is based on the fusion that took place in ancient supernovae.
eleitl@lemm.ee 3 months ago
Neutron star collision. Supernova nucleosynthesis is also when fusion turns off.
JustZ@lemmy.world 3 months ago
Everything is stardust so it’s everything fusion based?
eleitl@lemm.ee 3 months ago
Heavier nucleosynthesis requires neutron star collisions, so not fusion-driven. Supernovas are also when fusion stops.
booly@sh.itjust.works 3 months ago
The kinetic energy in that stardust, and the gravitational potential energy of stardust pulling itself into tighter balls, doesn’t necessarily come from fusion. There’s all sorts of cosmological forces and energy out there, and I don’t think they all trace back to nucleii smushing together.
JustZ@lemmy.world 3 months ago
That’s true I suppose.
Greg@lemmy.ca 3 months ago
Tidal is also non fusion based
Reverendender@sh.itjust.works 3 months ago
Not with that attitude