>>11314291Mars' specs:
• Gravity (g): 0.377g (37.7% of Earth's 1g)
• Atmospheric Pressure (AP): 0.636 kPa (0.62% of Earth's 101.325 kPa AP at sea level and 1.88% of Mount Everest's 33.7kPa AP)
• Radiation: 0.2 to 0.3 Sv per year (97-98% more than Earth's average of 6.2 mSv/0.0062 Sv per year.)
• Solar Radiance: 590 W/m^2 (59% of Earth's 1000 W/m^2)
Mount Everest's peak has an altitude of 29,029 feet (5.497 miles) above global mean sea level on Earth. That is on average 30 kPa. Mars atmosphere pressure is only 0.610 kPa.
>Earth's atmosphere is about 300 miles (480 kilometers) thick, but most of it is within 10 miles (16 km) the surface.Thus, in a round about way Mount Everest's peak is about a bit more than halfway up into Earth's usable atmosphere. Meaning, there's only about 4.503 miles of atmosphere above it. Let's pretend this is the distance we need for your exercise,
Mars diameter: 4,212.3 miles
Mars volume: 39,100,000,000 cubic miles
Needed atmosphere thickness: 4.503 miles
Mars Dia + Atmosphere thickness = 4216.803 miles
Mars Dia + Atmosphere volume = 39,300,000,000 cubic miles
39,300,000,000 cubic miles - 39,100,000,000 cubic miles = 200,000,000 cubic miles
You need 200,000,000 cubic miles of breathable air to reach Mount Everest level of atmospheric pressure on Mars.
21% of 200,000,000 cubic miles = 42,000,000 cubic miles (68,731,291 megatons) of pure oxygen needed.
79% of 200,000,000 cubic miles = 158,000,000 cubic miles of pure nitrogen needed.
>all calculations are fuck terrible and make wide assumptions and probable have huge mistakes everywhere.>greenhousesNot enough light from the sun to do that. Radiation shielding will strip the rest of the light until windows are no longer windows. Use RTGs for energy to power LED grow lights instead.
>release the oxygen created to create the atmosphereAs the above calculations show, you are going to need a shit load of gas to give Mars any kind of remotely usable atmosphere. Plants will not help.
