Here's how it works:
* Gravity is a force of attraction between any two objects with mass. The more massive the objects, the stronger the gravitational pull.
* Planets orbit stars because of the strong gravitational pull between them. The star's massive size creates a strong gravitational field that keeps the planets in their orbits.
* Satellites orbit planets for the same reason. The planet's gravity pulls on the satellite, keeping it in a curved path around the planet.
Think of it like a ball on a string. You swing the ball, and the string keeps it from flying off. The string represents gravity, and the ball represents the planet or satellite.
