I have come to understand that the effects of gravity extend out almost endlessly but that the attractive force reduces in strength with distance.
Would two small objects, say, two bowling balls located in a completely empty universe, spaced, say, a light-year apart, eventually come together due to gravitational attraction? Is there a minimum mass these objects would need to reach each other gravitationally, or would it just be a question of time? There would be no other forces acting on these objects.
