MARS.
The next chapter is written in red.
SCHEMATIC / NOT A SURFACE MAP
01 /
The measured world
- Mean radius
- 3,389.5 km
- Mean diameter
- 6,779 km
- Mass
- 6.417e+23 kg
- Gravity
- 3.71 m/s²
- Escape velocity
- 5.03 km/s
- Mean temperature
- -65 °C
- Rotation period
- 24.623 Earth hours
- Orbital period
- 686.98 Earth days
- Mean distance from Sun
- 1.524 AU
- Reported moons
- 2
Rounded reference values. Rotation is sidereal and differs from the solar day. Giant planets have no solid surface; temperature and gravity use atmospheric reference levels. Some moon counts are omitted because discoveries change them.
Compare with EarthA closer look
Olympus Mons is an enormous shield volcano.
Evidence of ancient rivers and lakes survives in the rocks.
Atmosphere
A thin atmosphere dominated by carbon dioxide.
Discovery
Known since antiquity.