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Comparison Chart
Comparison: Earth vs. Mars

This chart shows the differences between Earth and Mars. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

Discovered By
Known by the Ancients
Known by the Ancients
Date of Discovery
Average Orbit Distance
149,598,262 km
227,943,824 km
Perihelion (closest)
147,098,291 km
206,655,215 km
Aphelion (farthest)
152,098,233 km
249,232,432 km
Equatorial Radius
6,371.00 km
3,389.5 km
Equatorial Circumference
40,030.2 km
21,296.9 km
1,083,206,916,846 km3
163,115,609,799 km3
5,972,190,000,000,000,000,000,000 kg
641,693,000,000,000,000,000,000 kg
5.513 g/cm3
3.934 g/cm3
Surface Area
510,064,472 km2
144,371,391 km2
Equatorial Surface Gravity
9.80665 m/s2
3.71 m/s2
Escape Velocity
40,284 km/h
18,108 km/h
Rotation Period (Length of Day)
0.99726968 sidereal days
1.026 sidereal days
Orbit Period (Length of Year)
1.0000174 sidereal years
1.8808476 sidereal years
Mean Orbit Velocity
107,218 km/h
86,677 km/h
Orbit Eccentricity
Orbit Inclination to Ecliptic
0.00005 degrees
1.85 degrees
Equatorial Inclination to Orbit
23.4393 degrees
Orbit Circumference
939,887,974 km
1,429,085,052 km
Minimum/Maximum Surface Temperature
-88/58 (min/max) °C
-153 to +20 °C
Atmospheric Constituents
Nitrogen, Oxygen
Carbon Dioxide, Nitrogen, Argon


New planets/moons to compare:

System of measurement:

Compare All Eight Planets

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Last Updated: 30 Aug 2014