question_answer 38)

                  There have been suggestions that the value of the gravitational constant G becomes smaller when considered over very large time period (in billions of years) in the further. If that happens, for our earth,                 (a) nothing will change.                 (b) we will become hotter after billions of years.                 (c) we will be going around but not strictly in closed orbits.                 (d) after sufficiently long time we will leave the solar system.    

Answer:

                  (c, d) Gravitational force will become still weaker.