Mars
and its two moons, Phobos and Deimos (not shown to scale). Since
Mars is quite a bit smaller than the Earth, its gravitational
pull is less. If you weigh 100 pounds on Earth, you would only
weigh 38 pounds on Mars!
Length
of Day
23 Hours
and 56 minutes
24 Hours
and 34 minutes
Length
of Year
365
Days
687
Days
Circumference
24,900 Miles
13,260 Miles
Average
Distance from the Sun
93
million miles
141.6
million miles
Average
Surface Temperature
48°F
-63°F
Atmosphere
Mostly
Nitrogen and Oxygen
Mostly
Carbon Dioxide with some Nitrogen. Less than 1% of the atmospheric
pressure of the Earth!
