Proponents of astrology claim that the positions of the planets at the time of a baby’s birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Use Newton’s law of gravity to examine this claim. Calculate the ratio of the maximum force exerted on the baby by the planet Mars to the force of gravity exerted by the mass of the doctor’s head as she delivers the baby. Assume Mars is at its closest approach to the Earth at the time. You will need to estimate the masses of and distance between the doctor’s head and the baby.