Isaac Arthur thinks an orbital ring is a better idea: https://www.youtube.com/watch?v=LMbI6sk-62E&index=9&list=PLIIOUpOge0LsGJI_vni4xvfBQTuryTwlU https://www.y

Isaac Arthur thinks an orbital ring is a better idea: https://www.youtube.com/watch?v=LMbI6sk-62E&index=9&list=PLIIOUpOge0LsGJI_vni4xvfBQTuryTwlU https://www.youtube.com/watch?v=LMbI6sk-62E&index=9&list=PLI... He has other videos on ways we could get into space more cheaply, including by space elevators (which he basically doesn't think are feasible).