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Marsville
Marsville ABC facts
| Question | Answer |
|---|---|
| What s the equatorial diameter of Mars ? | 6,786 {4,217} |
| What is the length of the year in Mars ? | 687 Earth days |
| Distance from Sun {in millions} | 206.6 - 249.2 km {128.4 - 154.8} |
| Axis tilt | 25.2 degrees |
| Crust | Silicates |
| Mantle | Silicates |
| Core | Iron sulfides {?} |
| Gravity | 38% of Earth's gravity |
| Soil | Silicone {Si} and oxygen {O2} bound up with metallic elements such as iron and magnesium . |
| Atmosphere | 95% carbon dioxide |
| Surface pressure | 7-10 millibars |
| Water ice clouds | 10 to 25km high { 6 to to 15 mi } |
| Southern polar cap | Frozen carbon dioxide { dry ice } |
| Northern polar cap | Frozen water |
| Temperature range | - 194'F to 72'F {-125'C to 22'C } |
| Surface features | Four types of regions : 1) old regions with heavy craters ; 2) wind blown volcanic plains ; 3) huge volcanoes ( some 93 miles wide ) and 4) channels and canyons from erosion . No liquid surface water is known to exist . |
| Major colors | Red , from rust-like coating on surface soil. |
| Weather | Cold and dry . No precipitation . Dust storms which can grow to envelope the whole planet . |
| Life forms | Evidence for the existence of life is inconclusive {either way } . |