A student is calculating the gravitational force between the Earth and the sun. She knows that mass of the Earth is 5.972 * 10 ^ 24 kg, the mass of the sun is 1.989 * 10 ^ 30 kg, and the distance between the Earth and the sun is 1.496x * 10 ^ 12 meters. What piece of information is she missing to be able to find the gravitational force? (1 point)
O the direction of the force between the Earth and the sun
O the gravitational constant, G
O how much heavier the sun is compared to the Earth
O how long it takes for the Earth to revolve around the sun