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?
In The Martian, the hermes ship used to go between Mars and the Earth used this method. In the hail Mary Project the ship split in two halves joined by cables to replicate earth gravity, by separating the two halves by large distance.
It’s a Sci fi concept so far, there must be a reson it’s not implemented.