No, Mars is not hotter than the Sun. In fact, the Sun is incredibly hot, with a surface temperature of around 5,505 degrees Celsius (9,941 degrees Fahrenheit), while Mars has an average temperature of about -63 degrees Celsius (-81 degrees Fahrenheit).

Here's why:

* The Sun is a star: It produces its own light and heat through nuclear fusion, a process that releases enormous amounts of energy.

* Mars is a planet: It orbits the Sun and receives heat from it, but it doesn't generate its own heat.

The Sun is significantly hotter than any planet in our solar system.