• glimse@lemmy.world
      link
      fedilink
      arrow-up
      9
      ·
      1 day ago

      We’ve just been relying on helium deposits that are running dry and have to use other methods of extracting it that are less economical

      • chiliedogg@lemmy.world
        link
        fedilink
        arrow-up
        1
        ·
        19 hours ago

        The problem with helium is that once we’re out, we’re out. It’s the second-most abundant atom, yes, but it doesn’t react with anything, can’t freeze, and escapes the planet when exposed to open air.

        The only source we have of it is radioactive decay, and it’s not something we can manufacture in any volume. I think the only way to make it would be in a supercollider one atom at a time.

        • Rivalarrival@lemmy.today
          link
          fedilink
          English
          arrow-up
          1
          ·
          8 hours ago

          Radioactive decay is the source, yes, which means we won’t be out of it until the earth is out of all of the radioactive isotopes that are undergoing alpha decay.

          By the time that happens, Bussard collectors will probably escape from the realm of fiction.

          • chiliedogg@lemmy.world
            link
            fedilink
            arrow-up
            1
            ·
            6 hours ago

            Yes, but right now it’s “cheap” because it’s a byproduct of natural gas mining. As we transition off fossil fuels it won’t be so easy to acquire.

            One of the reasons the shortage was alleviated was the expansion of gas mining and the subsequent discovery of a bunch in Tanzenia.