by K. Richard, December 2, 2019 in NoTricksZone

Earth’s atmosphere contains 400 ppm CO2 (0.04%). Mars has a 950,000 ppm (95%) CO2 atmosphere. But Mars has surface temperatures that are about -75°C colder on average than Earth’s because atmospheric density, or pressure, is the “game changer” largely determining planetary temperatures.

Surface temperatures on Mars

The average surface temperature of a planetary body is significantly determined by its distance from the Sun.

According to the NASA Jet Propulsion Laboratory, Mars is close enough to the Sun to have its surface temperatures reach 35°C (95°F) at the equator during summer.

During winter, however, the Martian temperature dips to -90°C (-130°F).

The average surface temperature for Mars is about -60°C (-80°F).

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