On Wednesday, June 10, 2020 at 2:01:52 PM UTC-4, David Spain wrote:
On 2020-06-10 1:06 PM, Niklas Holsti wrote:

But I wouldn't call a space elevator "cheap" :-)

Good point. Plus it relies on unobtainium for the cable. I've heard
carbon nano-tubes *might* be strong enough. But haven't seen them laid
out in 36,000 km long "cables" either.

Nothing even remotely approaching obtainium is on the horizon for a space
elevator for Earth.

It would be possible for the Moon today, given its much lower gravity. Given
its very slow rotation, a geosynchronous anchor would not work, but they could
use one of the Moon's LaGrange points.