4 ms·
Space elevators have never been a thing besides in sci-fi or maybe project plans somewhere. Wireless electric transmission is an established commodity. I used i
by majewsky 3y ago
Space elevators have never been a thing besides in sci-fi or maybe project plans somewhere. Wireless electric transmission is an established commodity. I used it to charge my phone this morning.
- mcv 3y agoIf we want space tech that was here and then disappeared: manned missions to the moon. And after retiring the Space Shuttle, the US even lost the ability to put people into orbit until SpaceX came along. Of course that's all really about money and not knowledge, but that's true for all recently disappeared tech: it just wasn't economically viable. For tech that has actually been forgotten, you have to go back to Roman self-repairing underwater concrete.