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?
There’s a rotating spaceship in a parking lot in Japan. 20 years ago NASA paid Japan to build the Centrifuge Accomodations Module for the ISS, but Congress cut the $100m it was going to cost to launch it, so it’s next to some bushes with bird poop on it.