Planet
Mars
Mars hosts Olympus Mons, the tallest volcano in the Solar System.
Surface gravity 0.38× Earth
Mean radius 3,390 km
Mass 0.107× Earth
Length of day 24.7 hours
Length of year 687 Earth days
Avg. temperature -65 °C
Moons 2
Distance from Sun 1.52 AU
Mars compared to Earth
Mars has about 0.53× the radius of Earth and 0.107× its mass. Its surface gravity is 0.38 times Earth's — so a 70 kg person would weigh about 26.5 kg there.
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