Exploratour - Carbon Cycle of Mars

This is an image of a plateau and surrounding steep slopes within the Valles Marineris.
Click on image for full size
Image from: Malin Space Science Systems

Carbon Dioxide

The atmosphere of Mars is made of Carbon Dioxide (CO2). Earth has a carbon cycle, and scientists want to know if Mars has one too.

They think that there used to be a lot of CO2 on Mars. But where did it all go?

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