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The atmosphere of Mars is the layer of gases surrounding Mars. ... The average surface pressure is about 610 pascals (0.088 psi) which is 0.6% of the Earth's value. [2]
120–290 psi Pressure used in boilers of steam locomotives [citation needed] 1.1 MPa 162 psi Pressure of an average human bite [citation needed] 2.8–8.3 MPa 400–1,200 psi Pressure of carbon dioxide propellant in a paintball gun [64] 5 MPa 700 psi Water pressure of the output of a coin-operated car wash spray nozzle [58] 5 MPa 700 psi
This allows the atmosphere to temporarily become thicker than its average 610 pascals (0.088 psi) to a much greater atmospheric pressure of 1,250 pascals (0.181 psi) due to the atmosphere of Mars stacking upon itself from the immense depth of the Hellas impact basin. [12] This leads to an atmospheric pressure of approximately 1.5% that of the ...
The crater's depth of 7,152 m (23,465 ft) [1] below the topographic datum of Mars explains the atmospheric pressure at the bottom: 12.4 mbar (1240 Pa or 0.18 psi) during winter, when the air is coldest and reaches its highest density.
The pressure sensor can detect pressures from 1 to 1150 Pa (0.000145038 PSI to 0.1667934 PSI). [11] For comparison, 1 atmosphere is 101,325 Pascals or 14.7 PSI. [12] The air temperature, wind speed and direction sensor for InSight Mars lander (planned for 2018 launch) is based on REMS, also contributed by Spain. [13]
Compared to Earth, the atmosphere of Mars is quite rarefied. Atmospheric pressure on the surface today ranges from a low of 30 Pa (0.0044 psi) on Olympus Mons to over 1,155 Pa (0.1675 psi) in Hellas Planitia, with a mean pressure at the surface level of 600 Pa (0.087 psi). [116]
There are numerous challenges to human settlements on Mars: lack of breathable oxygen, harmful ultraviolet radiation due to its thin atmosphere, salty soil hostile to growing crops, dust storms ...
There are no bodies of liquid water on the Martian surface because the water vapor pressure is less than 1 Pa, [122] the atmospheric pressure at the surface averages 600 pascals (0.087 psi)—about 0.6% of Earth's mean sea level pressure—and because the temperature is far too low, (210 K (−63 °C)) leading to immediate freezing.