This is an image from the Mars rover, Curiosity, showing Mount Sharp. Why does Mars have this rusty red-orange colour? Yes, because it is rusting; the colour is caused by iron (III)oxide which you can also simply call rust.
![Mount Sharp on Mars Mount Sharp on Mars](/uploads/images/mainimage_Mount_Sharp_Mars.jpg)
This is an image from the Mars rover, Curiosity, showing Mount Sharp. Why does Mars have this rusty red-orange colour? Yes, because it is rusting; the colour is caused by iron (III)oxide which you can also simply call rust.