[jajko]

There will never, ever be such atmosphere on Moon as its on Earth. Too low gravity for example, solar winds would scrub it pretty fast even if you would somehow create it 100% with a snap of fingers.

Its nice dreaming about options but this aint realistic.

[phire]

We are only talking about "fast" relative to normal planetary timescales.

My understanding is that it would still take hundreds of years for the solar wind to strip away the atmosphere. If a civilisation had the technology to quickly put an atmosphere on the moon, it has the technology to continually replenish the atmosphere as long as that civilisation lasts.

It would never be practical (or a good idea) but a post-scarcity society could pull it off as a vanity project.

[Filligree]

Cover your garden with a few dozen meters of rock. In fact, build your base in a cave.