NASA was talking about this in the '70s and '80s. Didn't go anywhere, but left behind a pretty cool gallery of concept art: https://spaceflight.nasa.gov/galle

NASA was talking about this in the '70s and '80s. Didn't go anywhere, but left behind a pretty cool gallery of concept art: https://spaceflight.nasa.gov/gallery/images/exploration/lunarexploration/ndxpage1.html https://spaceflight.nasa.gov/gallery/images/exploration/luna...