Comparssion B/W Earth and Mars

EARTHMARS
Average Distance from Sun93 million miles142 million miles
Average Speed in Orbiting Sun18.5 miles per second14.5 miles per second
Diameter7,926 miles4,220 miles
Tilt of Axis23.5 degrees25 degrees
Length of Year365.25 Days687 Earth Days
Length of Day23 hours 56 minutes24 hours 37 minutes
Gravity2.66 times that of Mars0.375 that of Earth
TemperatureAverage 57 degrees FAverage -81 degrees F
Atmospherenitrogen, oxygen, argon, othersmostly carbon dioxide, some water vapor
Number of Moons12

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