Every spaceship in sci-fiction movie I watch has some kind of artifical gravity. But is that possible? Are there any theories on how can be some kind of artificial gravity created without having a planet/black hole stucked at the bottom of your spaceship or everything magnetised? So far I only thought of some kind of centrifuge. S hip that spins rapidly creating a kind of gravity. Of course its not perfect, and far from sci-fi kind of ship mechanics, but only reasonable suggestion so far. My second question: Give it that people in sci-fi movies could somehow fake gravity to around 1g, shouldnt that also affect objects around the ship? You cannot stop gravity using walls.