Gravitational influence??? Suppose for a senond that the only objects in the entire univesre are 2 stars, both about as massive as the sun. Also, this univesre is completely static. It is not expanding. The stars, at least initially, are not moving relative to each other. Under these conditions, about how much distance would need to be between the stars so as to ensure that they never collide? Or does gravitational influence never deminish to zero, no matter how far away you get?