Mars
Mars is the fourth planet from the sun. It is a planet of extreams. It has three volcanoes, called the Tharsis Montes, that are twice as broad and over twice as high as the volcanic island of Hawaii, when the island is measured from the sea floor, however the mountain that is the biggest on Mars is Olympus Mons. East of the Tharsis Montes, layes a gient network of canyons that streach over 5,000 km east to west. That is longer than the United States! Mars gets its red color from a rustlike coating in the serface soil that get blowen arown by the strong winds. These dust storms can reach up to 50 kilometers high, while most water ice clouds are 10 to 25 kilometers high. Serface air pressure on Mars is about 1/150th of earth's. Mars's atmosphere is mostly made of carbin dioxide.
Sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
Mars Statistics
Mass (kg) 6.421e+23
Mass (Earth = 1) 1.0745e-01
Equatorial radius (km) 3,397.2
Equatorial radius (Earth = 1) 5.3264e-01
Mean density (gm/cm^3) 3.94
Mean distance from the Sun (km) 227,940,000
Mean distance from the Sun (Earth = 1) 1.5237
Rotational period (hours) 24.6229
Rotational period (days) 1.025957
Orbital period (days) 686.98
Mean orbital velocity (km/sec) 24.13
Orbital eccentricity 0.0934
Tilt of axis (degrees) 25.19
Orbital inclination (degrees) 1.850
Equatorial surface gravity (m/sec^2) 3.72
Equatorial escape velocity (km/sec) 5.02
Visual geometric albedo 0.15
Magnitude (Vo) -2.01
Minimum surface temperature -140°C
Mean surface temperature -63°C
Maximum surface temperature 20°C
Atmospheric pressure (bars) 0.007
Atmospheric composition
95.32%
2.7%
1.6%
0.13%
0.07%
0.03%
0.00025%
0.00003%
0.000008%
0.000003%