Can an object be constructed in such a way that, when thrown WITH rotation in space, causes the object to curve in it's trajectory. Now, I'm not referring to "curve balls" in baseball, because a curve ball in space will not curve. Rather, I'm thinking somewhere along the lines of a "dumbell" that has less mass on one side versus the other, and is thrown in space with a rotational moment. Under that condition, I assume the center of mass shifts in a cyclic fashion during rotation, causing the trajectory to trace a sinusodal path. Is that correct? If that is correct, is there some arrangement of a differential rotating mass that will perform a sustained curve in space as opposed to the above sinusodal motion?