this post was submitted on 24 Apr 2025
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Half of the universe's hydrogen gas, long unaccounted for, has been found (phys.org)
submitted 2 weeks ago by rssbot@lemmy.bestiver.se to c/hackernews@lemmy.bestiver.se
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[–] ProfessorOwl_PhD@hexbear.net 2 points 2 weeks ago

One of the ions of hydrogen is a proton, but there's also a proton and one or two neutrons for deuterium and tritium, and anion versions of the 3 isotopes where they absorb an extra electron, mostly within stars.