An idea i was thinking about while in bed waiting to fall asleep was how to utilize Venus's resources. The the rotation makes it a bad target for terraforming. It has plenty of raw resources thought on and under the surface. If asteroidial resources started to run low in the inner system the current civilization could deplete the atmosphere of Venus. The planet would be rendered airless as Mercury, which would make it cooler, dead and frictionless. Then the civilization could build sets of maglev launching systems on the surface(near the equator) which could launch mined resources(in resource sleds) from the surface to orbital velocities. The lack of atmosphere allows the system to gain all its orbital velocity on the track at the surface. The Maglev would be powered by solar collectors.
The System would be wholly automated from the strip mining to the launching and retriving of resource sleds.
A system like this could be deployed on Mercury much sooner too.
Rssource maglevs are the practical way to retrive resources from airless gravity wells.
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