Terrestrial planet
Mars
The Red Planet preserves ancient river valleys and polar ice caps. Robotic explorers study its geology and search for signs of past habitability.
- Avg. distance
- 1.52 AU
- Diameter
- 6,779 km
- Day length
- ~24.6 hours
- Year length
- ~687 Earth days
- Moons
- 2 (Phobos, Deimos)
Did you know?
Olympus Mons is the largest volcano in the solar system by footprint.
Mars mission planning
For a dedicated overview of Mars plus a practical summary of SpaceX's public Starship-to-Mars plan, visit /mars .