Mars
NASA/JPL/MSSS
Terrestrial planet

Mars

Has the largest volcano in the Solar System.

Object typeTerrestrial planet
Diameter6,779 km
Mass0.107 Earth masses
Gravity3.71 m/s²
Average temperatureAbout -63°C
Distance from the Sun227.9 million km
Orbital period687 Earth days
Rotation period24.6 hours
Number of moons2
AtmosphereThin carbon dioxide
DiscoveryKnown since antiquity

Interesting Facts

  • Has the largest volcano in the Solar System.
  • Ancient river valleys show liquid water once flowed.

Major Missions

  • Viking
  • Curiosity
  • Perseverance
  • MAVEN