Mars

Mars is a desert planet with cold, dusty terrain and a thin atmosphere.[1] Its radius is 3,390 kilometres.[1]

Findings

Olympus Mons on Mars ranks as the biggest volcano known among the planets.[1] Mars has seasons, changing weather, and polar ice caps.[1] Long ago, Mars appears to have had a warmer climate and liquid water on its surface.[1] JPL lists the planet's mean radius as 3,389.5 kilometres.[2] ESA gives a Martian day as 24 hours and 37 minutes.[3]

Sources

  1. Mars Facts | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.
  2. Physical Parameters of the Planets | NASA/JPL. Licence: facts-only (Track B), no text reused. Attribution: NASA/JPL-Caltech.
  3. Facts about Mars | European Space Agency. Licence: facts-only (Track B), no text reused. Attribution: European Space Agency.

Evidence as of 2026-11-01.