Exit 3D

Facts About Mars, the Red Planet in 3D

Loading the 3D scene…

Polar ice capWater ice and frozen CO₂Crust10–50 km of iron-rich rockMantle1,240–1,880 km thickOlympus MonsLargest volcano, over 25 km tallCoreIron, nickel and sulfurValles MarinerisCanyon 3,870 km longRed dustRusty dust and dust stormsPhobosDeimosCutaway view. Thin outer layers drawn thicker; moons not to scale.123456789

Mars at a glance

If Earth were the size of a nickel, Mars would be about as big as a raspberry.

Order from the Sun
4th of 8
Type
Rocky planet
Distance from the Sun
228 million km (1.52 AU)
Diameter
6,792 km (0.53× Earth)
Length of day
24.7 hours
Length of year
687 Earth days
Moons
2
Rings
No
Average temperature
-65 °C (-85 °F)
Gravity
38% of Earth's
Axis tilt
25.2°
Sunlight takes
13 minutes

On Mars you would weigh about 30 (38% of your Earth weight). Your mass stays the same; only gravity changes.

Source: NASA Planetary Fact Sheet and NASA Science.

Mars facts quiz

8 questions about Mars