Who was the first to suggest that planets revolved around the Sun instead of the Earth? Explain how the force of gravity from the moon results in tides on both sides of the Earth. Write a computer sim...Who was the first to suggest that planets revolved around the Sun instead of the Earth? Explain how the force of gravity from the moon results in tides on both sides of the Earth. Write a computer simulation to plot the orbit of two bodies, and explore how the total mechanical energy of one object affects its motion. If the two bodies have the same mass, and both move, where is the focus of the conical section describing their respective paths?