We could do space mining today if their was any incentive to do it. There just isn’t any reason to currently but if we start using fusion power (which China has made strides in recently) it would make a ton of sense to get He-3 on the moon.

Hell I give it 20 years before a private company at the very least tries to move one of the really rare earth element rich asteoids into an orbit around earth. From the calculations I’ve seen we could technically do it with current rocket tech assuming proper planet alignment.

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Carbon really is the closest thing to magic sci fi materials. It’s just so cool how strong it is and how versatile it could be. And to top it off it’s fucking everywhere so if we can figure out how to make things like this more effectively it wouldn’t even be that expensive.