It's not accurate to say the Sun is "bigger" from Mars. The Sun's size doesn't change, but its apparent size does.

Here's the breakdown:

* The Sun's actual size: The Sun is roughly 109 times the diameter of Earth.

* Apparent size: This refers to how big an object appears in the sky from a particular location. The farther away you are from an object, the smaller it appears.

* Sun from Earth: The Sun appears as a large disc in our sky.

* Sun from Mars: Mars is farther from the Sun than Earth. This means the Sun appears significantly smaller in the Martian sky. Specifically, it appears about half the size as seen from Earth.

So, while the Sun is the same size, it appears smaller from Mars due to the greater distance.