The Sun is much bigger than Mars. Here's a breakdown of their sizes:

* Sun: The Sun has a diameter of about 865,000 miles (1.39 million kilometers).

* Mars: Mars has a diameter of about 4,212 miles (6,779 kilometers).

To put this in perspective:

* The Sun is about 109 times wider than Mars.

* The Sun's volume is about 1.3 million times larger than Mars's volume.

So, the Sun is *significantly* bigger than Mars.