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?
ISS has thrusters that push it up/ forward from time to time. It’s practically permanently falling on / around earth, to create the lack of gravity. Up there gravity is nearly pulling as strong as here