Mercury Venus Earth Moon Mars

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Mercury Venus Earth Moon Mars
Pressure Composition
Atmosphere
Day Surface Temperature Clouds
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Atmospheres

• Pressure
• Explode?
• Decompression Sickness
• Breath or Choke
• Shields Against Radiation
• Slows Changes in Temperature
• Holds Heat
• Clouds Erosion

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Mercury Venus Earth Moon Mars
0 1 0
Pressure Composition
Atmosphere
Day Surface Temperature Clouds
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Mercury Venus Earth Moon Mars
100 x 1/80
0 1 0
Pressure Composition
Atmosphere
CO2 CO2
N2 O2
24 hours 40 min
176 x 243 x
24 hours
28 x
Day Surface Temperature Clouds
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Atmospheres

• Pressure
• Breath or Choke
• Shields Against Radiation
• Slows Changes in Temperature
• Holds Heat
• Erosion

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Surface Temperature

• Distance From Sun
• Atmosphere
• Composition
• Rotation

• Closer Planets Hotter
• Slows Temperature Changes
• Some Gases Trap Heat
• Rapid rotation moderates temperature.
• Slow rotation results in temperature extremes.

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Mercury Venus Earth Moon Mars
100 x 1/80
0 1 0
Pressure Composition
Atmosphere
CO2 CO2
N2 O2
24 hours 40 min
176 x 243 x
24 hours
28 x
Day Surface Temperature Clouds
100 -55
800 -280
225 -280
45 -197
880
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Clouds of Venus

• Cant See Surface
• Clouds
• Water
• Moist
• Swamps and Jungles
• Dinosaurs
• Amazon Women

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Mercury Venus Earth Moon Mars
100 x 1/80
0 1 0
Pressure Composition
Atmosphere
CO2 CO2
N2 O2
24 hours 40 min
176 x 243 x
24 hours
28 x
Day Surface Temperature Clouds
100 -55
800 -280
225 -280
45 -197
880
H2SO4 H2O
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Clouds of Venus

• Cant See Surface
• Clouds
• H2SO4 Sulfuric Acid
• Moist
• Swamps and Jungles
• Dinosaurs
• Amazon Women

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Mercury Venus Earth Moon Mars
100 x 1/80
0 1 0
Pressure Composition
Atmosphere
CO2 CO2
N2 O2
24 hours 40 min
176 x 243 x
24 hours
28 x
Day Surface Temperature Clouds
100 -55
800 -280
225 -280
45 -197
880
H2SO4 H2O
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Terraforming
Engineering Project Planet is Made
Earth-Like Algae Added to Atmosphere CO2 H2SO4
Algae è Algae O2 H2O
Algae
CO2
H2SO4
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Length of Day
Rotation Revolution Resonance
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Resonance
Whole Number Relation Rotation
Revolution 10days 15days 3 2 1 2 7 3 1 1
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Resonance
Differential Gravity Tidal Evolution 1 1 Tidal
Lock Synchronous Rotation Moon
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Resonance
Close to Sun Differential Gravity Tidal Evolution
è 1 1 If Liquid Surface Mercury 3 2
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late afternoon
afternoon
midnight half day complete
sunset

noon
one full rotation complete
evening
late night
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Obliquity
Earth 23.4O Tropics Arctic Circle Seasons Long
Days Summer Long Nights Winter
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Obliquity
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Obliquity
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Obliquity
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Obliquity
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Obliquity
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Obliquity
retrograde 90º
prograde 42
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Mars
Huygens Polar Ice Caps
Schiaparelli Canali
Darkening Color Change Percival
Lowell Canals Irrigation Crops Struggling
Martians Martian Invaders
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CO2 frost forms at night vaporizes at sunrise
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Obliquity
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Holding an Atmosphere
H2
He
Earth
Venus
CH4 NH3 H2O
N2 O2 CO2
Mars
Mercury
Titan
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Living on Mars

• cant hold atmosphere
• pressurized building
• no space suit
• carbon dioxide
• oxygen mask
• biosphere
• water
• recycling
• oxygen shortage

CO2
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Mars Rocks
Brought to Earth by Natural Forces Where do we
find rocks that fell from the sky? Glaciers Mars
Struck by Meteorite
Mars Rocks Thrown into Space Go into Orbit Around
Sun
Some Hit Earth
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fossilized life? Did life begin on Mars? mineral
deposits? too small?
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Mercury Venus Earth Moon Mars
100 x 1/80
0 1 0
Pressure Composition
Atmosphere
CO2 CO2
N2 O2
24 hours 40 min
176 x 243 x
24 hours
28 x
Day Surface Temperature Clouds
100 -55
800 -280
225 -280
45 -197
880
H2SO4 H2O
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Mercury Venus Earth Moon Mars
Day Year Obliquity Gravity Magnetic Field