We'll have to do a fair amount more exploration and/or be lucky before asteroids can be a source, but, yeah, your points are well taken. Then again, the moon i

We'll have to do a fair amount more exploration and/or be lucky before asteroids can be a source, but, yeah, your points are well taken. Then again, the moon is there, and [ pretty much every other point I'd make is addressed by my novel reference ^_^, modulo maybe the moon's gravity will be relatively good for humans. Of course, then Mars' would be better. ]