Mars

Inner PlanetSolar System

CategoryInner Planet

SystemSolar System

Diameter6779 km

Orbital Period687 days

About Mars

The Red Planet due to iron oxide on its surface. Olympus Mons is the tallest volcano in the solar system at 21.9 km high. Valles Marineris is a canyon system 4,000 km long. Has two tiny moons, Phobos and Deimos. Evidence suggests liquid water existed on the surface in the past. The most explored planet besides Earth.

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