Here's the breakdown:
* Gravity: The Sun's massive size creates a strong gravitational field that pulls on everything around it, including Earth.
* Orbit: Instead of being pulled directly towards the Sun, the Earth's initial sideways motion, known as its tangential velocity, balances out the Sun's pull. This balance creates a continuous circular path around the Sun, which we call an orbit.
Think of it like a ball on a string. If you swing the ball, the tension in the string (like gravity) pulls the ball towards your hand (like the Sun), but the ball's sideways motion keeps it moving in a circle.
So, it's the combination of the Sun's gravity and Earth's sideways motion that creates the Earth's orbit around the Sun.
