Mars is home to a huge canyon system called the Valles Marineris, as well as the largest volcano in the solar system: Olympus Mons. The surface of Olympus Mons is geologically very young, and the volcano may still be active. Mars likely rivers and lakes in the ancient past.
THE ATMOSPHERE OF MARS: The distinctive red color of the Martian surface is due to fine dust particles that coat the ground. Planet-wide dust storms can occur when high winds blow the dust into the air.
Author of the graphic: Eleanor Lutz