Here's how it works:

* The Sun's Gravity: The Sun is the most massive object in our solar system. Its immense gravity exerts a strong pull on all the planets, including Earth. This pull is what keeps the planets in orbit around the Sun.

* Centripetal Force: Planets are constantly moving, and this motion creates a force called centripetal force. Centripetal force acts towards the center of the orbit, counteracting the tendency of the planet to fly off in a straight line.

* Balance: The balance between the Sun's gravity (pulling the planet inward) and the planet's inertia (tendency to move in a straight line) is what creates the stable orbit.

Think of it like a ball on a string. The string acts like gravity, pulling the ball inwards, and the ball's motion creates the centripetal force that keeps it moving in a circle.