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Garlien t1_ispn6tw wrote

Reply to comment by Khourieat in TIL Liquid Helium is the perfect element to keep the superconductive magnets in MRI machines cold by Alternative-Leg1095

If we literally run out of helium, an inefficient fusion reactor would likely be more cost efficient than mining it from outer space.

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Efficient-Library792 t1_isqsgf9 wrote

I think you underestimate what it costs to run even an energy neutral fusion plant. There are a few around the world and they cost 10 figures to build and probably 8 to run. Amd they likely produce tiny amounts of helium

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