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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]
0.06–0.13 psi Atmospheric pressure on Mars, < 1% of atmospheric sea-level pressure on Earth [37] 610 Pa 0.089 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.
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]
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]
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 ...
Mars' surface gravity is 37.8% of Earth's, approximately 2.3 times that of the Moon, so weight is a significant concern, but there are fewer thermal demands compared to open space. [4] At the surface the suits would contend with the atmosphere of Mars, which has a pressure of about 0.6 to 1 kilopascal (0.087 to 0.145 psi). [5]