Question: is it possible to simulate gravity in space

Answer: Yes, Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by spacecraft's hull that acts as centripetal force. Thus, the ``gravity'' force felt by an object the centrifugal force perceived in the rotating frame of reference as pointing ``downwards'' towards the hull. In accordance with Newton's Third Law the value of little g (the perceived ``downward'' acceleration) is equal in magnitude and opposite in direction to the centripetal acceleration.