Examine the astronauts who spent at least four months in space thirty years from now and then some things may become apparent.
Zero or low gravity effects also include impeding or preventing blood clotting. Even small cuts can cause excessive bleeding and don’t heal until the astronauts return to Earth. No one so far has had any kind of minor surgical procedure in space due to the possibility of blood loss. Also, antibiotics don’t seem to be effective in space making even minor bacterial infections very dangerous.
Add to this the risks of cancer from high radiation and solar flares and it is clear that long term space travel for humans is not practical without new medical treatments and artificial gravity environments.
Hey, IF it will help with the chronic, no-cure, mental disease known as liberalism, I have a great idea!!!! /s
It should be easy to just spin something on the end of a tether with a counterweight, although for space stations it would complicate docking. But the only reason we even have a space station is for zero g research, so that would be self-defeating.
My solution would be to stop sending up Demorat Astronauts.
Manned missions to plant a station on Mars are premature, premature to our level of understanding everything about what is really needed for such a mission.
Learn to walk before learning to run.
We should use about twenty years of experience building and using a base on the moon and an orbiting platform halfway between the earth and the moon as a launch platform for very long distance space travel.
Atfer all of that we may have discovered enough, decided enough and designed enough things to make manned missions to Mars much, much. better and safer than we can today.