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Mars has a thin atmosphere, mainly of Carbon Dioxide (95.32%). Nitrogen makes up 2.7%, Argon 1.6%, Oxygen 0.13% and Carbon Monoxide makes up around 0.08%.

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Ardella Ernser

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2y ago
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11y ago

Mars has a thin atmosphere, mainly of Carbon Dioxide (95.32%). Nitrogen makes up 2.7%, Argon 1.6%, Oxygen 0.13% and Carbon Monoxide makes up around 0.08%. There are other trace gases such as Water Vapour, Neon, Krypton, xenon, Molecular Hydrogen and Nitric Oxide.

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13y ago

The atmospheres of both planets is like night and day, literally. Mars has a very small atmosphere basically consisting of Carbon Dioxide (95.32%), Nitrogen (2.7%), Argon (1.6%), Oxygen (0.13%), Carbon Monoxide (0.07%), water vapor (0.03%). There is also a traces of Methane, Neon, Krypton, Formaldehyde, and Xenon gases in the atmosphere.

Venus, on the other hand, is a "runaway greenhouse. Carbon Dioxide (96.5%), Nitrogen (3.5%),. The other trace gasses are Sulfur Dioxide, Argon, water vapor, Carbon Monoxide, Helium, Neon, Hydrogen Chloride, and Hydrogen Fluoride. Its the mixture of Carbon Dioxide plus water vapor plus Sulfur Dioxide gives the planet a strong greenhouse effect.

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15y ago

Carbon dioxide. The pressure is 7-9 percent that of the Earth because during Winter on its northern hemisphere some of the atmosphere condenses at the pole.

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13y ago

nip´senfviod´cnioásgv

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15y ago

mostly carbon-dioxide

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14y ago

Carbon Dioxide

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Q: Mars atmosphere is composed mainly of what?
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