Mars – The Red Planet
Mars is the fourth planet from the Sun and is often called the Red Planet because of its reddish appearance caused by iron oxide on its surface.
Scientists are particularly interested in Mars because evidence suggests it may have once had liquid water, raising the possibility of past life.
- Distance from Sun: 227.9 million km
- Moons: Phobos and Deimos
- Day length: 24.6 hours