Since the space around the ball-our stand-in for a star-is distorted, other objects will be pulled in toward it. This effect is what we call gravity. But remember that the star bends not only space but time as well. This distortion is a cornerstone of all physically possible time travel scenarios. Time also becomes distorted when you travel quickly through space at speeds approaching that of light. By cleverly utilizing these two effects, physicists have devised some conceivable, though laborious, time travel scenarios, employing fantastic objects such as black holes, wormholes, and cosmic strings. See "The Physics of Time Travel" for more.