"Get your ass to mars"
We could very realisticly terraform mars to be the second and clean earth, all we need to do is pump a little CO2 into Mars' atmosphere and it develop a thicker atmosphere, trapping the heat absorbed by Mars from the Sun, and melting the Polar ice caps of Mars, creating water, recycling water would give us Hydrogen and Oxygen, creating breathable air and fuel for rockets, therefore creating Mars into the Human Races new home planet.
Yes Mars does have an atmosphere, it's true. But it is so thin, it would count as a laboratory vacuum on Earth. For most purposes, you might as well be in space or on the Moon.
A human would need to put on a spacesuit to survive the low pressure, never mind the lack of oxygen. The pressure is so low, your saliva and the moisture coating the interior of your lungs would boil. The average Mars surface pressure is well below the 6% Armstrong limit which absolutely is the limit for human survival. Average surface pressure is about 0.6% of Earth sea level. A leak in your spacesuit would kill you quickly. No oxygen to speak of either.
The atmosphere does have some benefits, as a source of CO2, but even then, is low pressure so has to be pressurized to be useful. In a space colony, then you could make CO2 from the carbonaceous near Earth asteroids; it's not that hard to find ways to make it in space if you expand your habitat e.g. with greenhouses and need more atmosphere.
Get a grip, 'planke'!!
Better still ... go walk the plank!
We could very realisticly terraform mars to be the second and clean earth, all we need to do is pump a little CO2 into Mars' atmosphere and it develop a thicker atmosphere, trapping the heat absorbed by Mars from the Sun, and melting the Polar ice caps of Mars, creating water, recycling water would give us Hydrogen and Oxygen, creating breathable air and fuel for rockets, therefore creating Mars into the Human Races new home planet.
A human would need to put on a spacesuit to survive the low pressure, never mind the lack of oxygen. The pressure is so low, your saliva and the moisture coating the interior of your lungs would boil. The average Mars surface pressure is well below the 6% Armstrong limit which absolutely is the limit for human survival. Average surface pressure is about 0.6% of Earth sea level. A leak in your spacesuit would kill you quickly. No oxygen to speak of either.
The atmosphere does have some benefits, as a source of CO2, but even then, is low pressure so has to be pressurized to be useful. In a space colony, then you could make CO2 from the carbonaceous near Earth asteroids; it's not that hard to find ways to make it in space if you expand your habitat e.g. with greenhouses and need more atmosphere.