The Sun is much closer to Earth than Mars. Here's why:

* The Sun is our star: It's the center of our solar system, and Earth orbits around it.

* Mars is a planet: It orbits the Sun at a greater distance than Earth.

To give you a better idea of the distances:

* Earth to Sun: Approximately 93 million miles (150 million kilometers)

* Earth to Mars: The distance varies depending on their orbital positions, but it's typically between 35 million miles (56 million kilometers) and 249 million miles (401 million kilometers).

So, while Mars is the closest planet to Earth, the Sun is significantly closer to us than any planet in our solar system.