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> one of the things I absolutely do expect to be possible on its surface is 3D printing an extremely clean clean-room. My understanding is that there is lots o

> one of the things I absolutely do expect to be possible on its surface is 3D printing an extremely clean clean-room. My understanding is that there is lots of very fine dust near the surface of the moon. It's continually being bombarded with micrometeorites that kick up the dust. So perhaps a moderately cleanish room.

LargoLasskhyfv 4y ago
In addition to that, not 'well rounded' by erosion like sahara sand, instead still very sharp edged, abrasive. And electrostatically charged by being bombarded with particles over long times. Creeping into every seam and seal. Not good to breathe in at all. There was a scene in https://en.wikipedia.org/wiki/For_All_Mankind_(TV_series) https://en.wikipedia.org/wiki/For_All_Mankind_(TV_series) S02E01 where a solar storm surprised some astronauts on the surface, where they couldn't make it into shelter in time. One got toasted, another barely made it into a cave, and watched from there. It looked like invisible drops of torrential rain, splashing down hard, and stirring the dust up, like in slow-motion capture of a drop of water, impacting, and stirring things up. I don't know how realistic that is, but I liked it as a conceptual visualization, at least. Edit: Think of something like a https://en.wikipedia.org/wiki/Cloud_chamber https://en.wikipedia.org/wiki/Cloud_chamber at large scale. Where the medium is stirred up dust. Edit: A there it is: https://www.youtube.com/watch?v=YzlP403rUGA https://www.youtube.com/watch?v=YzlP403rUGA