I vaguely recall that in Farmer In the Sky Heinlein had them farming on asteroids.
I don't remember his gimmick for maintaining a livible biosphere on the things though. Must have been some kind of forcefield? Too many years ago.
Space/Science » in reply to "Mars Needs Earthworms."
I don't remember his gimmick for maintaining a livible biosphere on the things though. Must have been some kind of forcefield? Too many years ago.