I don't think the human body could survive in a non gravity environment for a life span.........
We also need to be in the presence of a magnetic field similar in strength to that of earth as well, there are plenty of unknowns.
However, no matter where we go, there will always be Chinese take out there. I think its one of the undocumented laws of physics.
Artificial gravity is easy in a space ship or station. Just spin it. It’s the only kind that may be possible. There’s too much “magic” in popular science fiction making it more fiction than science.
Azimov had a short story regarding inter-steller travel.
(Patience, please as I am trying to recall details of a short-story read over 40-yrs ago).
Scenario:
Decades and decades ago, earth was facing certain death and ships of humans are launched towards a star system suitable for human life. But these ships are limited to “regular” sub-light speed.
What complicates is the fact that the large slow ships were limited in speed and subsequently generations of humans were born and died on those ships as they traveled between the stars.
But. . .just after the huge slow ships launched hyper-speed was solved and travel between the stars was regular and fast and no longer took generations, just a few months.
Question was, how to contact those old large ships and tell them they did not need huge ships capable of inter-steller travel.
Vast distances between the stars made finding the huge and old ships was darned near impossible. In fact, they had not established communication with the old huge ships.
How do you initiate contact and update them on advances that would have made their sacrifice (saying goodbye to family and friends) unnecessary.