The air of Mars is made of carbon dioxide molecules.
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Composition of the Martian Atmosphere
On Earth, the air is made mostly of nitrogen, but there is some oxygen for us to breathe too.
On Mars, the air is made of carbon dioxide. Solid carbon dioxide is also known as dry ice. (You may have seen dry ice used to create smoke at a concert or haunted house).
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game