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Mars

Terrestrial Planet

Mars is a cold, iron-oxide desert world home to Olympus Mons, the largest volcano in the solar system at nearly three times the height of Mount Everest, and dry riverbeds suggesting liquid water once flowed across its surface.

Field Notes
  • Olympus Mons stands about 21.9 km tall — nearly three times the height of Everest.
  • Mars has two small, irregularly shaped moons, Phobos and Deimos, likely captured asteroids.
  • Dry riverbeds and mineral deposits suggest Mars once had flowing liquid water on its surface.
Planet Specifications
Radius3,389 km
Mass6.417 × 10²³ kg
Distance from Sun227.9M km
Rotation Speed868.2 km/h