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?
I wonder if two opposing rings would be connected by some sort of circular maglev track where the mechanism would just preserve overall angular velocity but spin the two halves in opposite directions. The spin could be entirely powered by electric motors, and energy could be conserved if it needs to slow down or speed up. That might be a lot of mass, but it might not cost any fuel to get it spinning.