Reset the PhET Gravity and Orbits Simulator. Set the model to show the Earth and Satellite, and select the Gravity Force, Velocity, Path, and Grid options. Relocate the satellite approximately one and a half boxes away from the center of the Earth. Increase and decrease the Planet Mass (do not start the simulation), and observe the two blue gravitational force arrows (on pointing out from the center of the Earth, and the other pointing out from the satellite). Now, increase and decrease the Satellite Mass and observe the gravitational force arrows again. The magnitude of the Earth's gravitational force (length of the blue arrow) is always __________ the magnitude of the satellite's gravitational force. Equal to Opposite and equal to Greater than Lesser than