Moon's surface is about thirty million square kilometers large. That's a lot of plastic, but no bigger effort than many other terraformingsterraforming projects we have discussed.
Description:
A global bubble of plastic floating at a height of eight thousand meters over the moon's surface, sustained by an atmospheric pressure of 1 bar. Not much more advanced materials technology than the present.
Some questions:
1.- How to make it.
Would it be better to extend the plastic on the surface and then inject the gas? Or would it be better to place plastic sheeting in orbit and go creating a cocoon? This cocoon would then decay from the orbit for being sustained by the atmosphere.
2.- How to mantainmaintain it.
How long will an ordinary plastic or PVC last in the space? How long will take for an small meteoritic impact to have irreparable consequences if not fixed?
3.- How to live with it.
Best designs for access portholes. Best ecological choices for the lunar biosphere. Best social choices for a human society that would live in a near earthly, but low gravity environment with a monthly day-night cycle.