[ivan_gammel]

Self-sustaining human colonies in space or on other celestial bodies are very distant dream, probably it will take several centuries or millennia to happen. The main reason is human body: we haven’t figured out reproduction in low gravity yet. Unless some fascist state will do it, we will never experiment with it until full confidence in safety for the mother and the child.

[dotnet00]

It's a very distant dream that will always remain distant if we don't work on it. We have a lot of things to test before we get to testing the gravitational requirements of human reproduction. As it stands, we don't even know our basic gravitational needs. All we know is that 0g is too low. It's entirely possible that it turns out we can function relatively fine at something low but non-zero, like 0.1g.

[gamacodre]

I expect we'll experiment with that as soon as we get a man and a woman imperfectly supervised in a low-gravity environment for 9+ months.

[philwelch]

It’s easier than you think to get 1g of gravity in space.