We all know the pictures of the astronauts on the ISS floating around. We also suspect that a lack of gravity is bad for the body as the muscles go weak and such.
Why don’t spaceships just rotate to cause the effect of artificial gravity through centrifugal forces?
It helps reduce the problems mentioned if you lessen the target goal. We don’t need 1 G of force just like we don’t need a full 1 atm or pressure or 80% of nitrogen mix in the air to breathe. Less gravity force, less RPMs for the same diameter.
But scale is still the better option, making something a few kilometers wide and with only 0.7 G means less stress, less effects from the rotation, etc. That’s still in the category of megastructures though, so while not impossible to build, not going to happen at our current level.
yeah 200 mbar of oxygen should be fine, also 0.3g if we’re gonna land on mars eventually we might as well get used to the gravity level.