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Marvel brainstorming (infosec.pub)

submitted 2 days ago by Beep@lemmus.org to c/comicstrips@lemmy.world

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[–] LastYearsIrritant@sopuli.xyz 4 points 1 day ago (1 children)

To be fair, a lot of elements existed before the first stars exploded, it was just overwhelmingly hydrogen and helium.

[–] justme@lemmy.dbzer0.com 1 points 23 hours ago (1 children)

I was talking about the beginning, so the big bang, which only produced hydrogen and helium. At least that is the common consensus. The first stars were creating more elements, as they can create everything up to iron. For everything else we need super Nova explosions, which obviously came much later, but that also explains only a part of the universes chemical evolution. The rest could be explained by binary neutron star mergers or exotic types of super novae, but that is still highly debated.

[–] LastYearsIrritant@sopuli.xyz 1 points 23 hours ago

It honestly depends on how TECHNICAL you're trying to be.

If you're being super well acktually - then zero elements were created by the big bang. It was way too hot and dense and it was only subatomic particles. Everything had to cool slightly, and stuff had to decay slightly, for any elements to be created at all.

Then after that, the VAST MAJORITY of elements were hydrogen and helium, yes, but there was a very small amount of other elements (lithium being the biggest part of that small amount of other elements). The fact that it's a sliver of a percent doesn't matter, the universe is enormous and larger elements, while rare, actually did exist back then.

This deuterium then fused to heavier nuclei, including tritium, helium-3, helium-4, and lithium-7.[2]: 315 Helium-4 has a large binding energy, which means that once a helium-4 nucleus is formed, it is difficult to break apart and incorporate its constituents into heavier nuclei. Therefore matter in the universe is primarily hydrogen and helium-4 after BBN.[13]: 68 Standard BBN predicts, by the time BBN ends, the universe is composed of about 75% of hydrogen and 25% helium-4 by mass. Roughly 1 nucleus in 100,000 is deuterium or helium-3, and 1 nucleus in 1,000,000,000 is lithium-7. Even smaller amounts of heavier elements, as heavy as oxygen-20, have been predicted to form.[10]
https://en.wikipedia.org/wiki/Big_Bang_nucleosynthesis

So really - there's no reason why some crazy weird elements couldn't have also been created, it's just rare - which is the whole point of "crazy rare super metal - Uru - was created at the beginning of the universe"