NASA has announced plans for a permanent lunar base. Which is exciting — and also something NASA has announced before. This episode of Sidequests covers the missions that were seriously planned, thoroughly engineered, and never flew: a human Venus flyby designed around existing Apollo hardware, a nuclear rocket engine that actually worked and could have reached Mars in the 1980s, a U.S. Army Moon base proposal from 1959 that predated the Space Race, and a space station that fell out of orbit while the shuttle that could have saved it sat grounded two years behind schedule. The history of spaceflight isn't just what launched. It's also the remarkable futures that almost were.
","author_name":"Keith Conrad"}