Atmosphere of Mars Image of Mars with sandstorm visible, taken by the Hubble Space Telescope on 28 October 2005 General information Chemical species Mole fraction Composition Carbon dioxide 95.97 % Argon 1.93 % Nitrogen 1.89 % Oxygen 0.146 % Carbon monoxide 0.0557 %
what is the composition of mars' atmosphere
Carbon dioxide 95.97 % Argon 1.93 % Nitrogen 1.89 % Oxygen 0.146 % Carbon monoxide 0.0557 %