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the claim

The Martian atmosphere is mostly carbon dioxide.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
10 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the Martian atmosphere is mostly carbon dioxide?

Yes. Multiple reference and official-record sources state directly that the Martian atmosphere is mostly carbon dioxide, including a Mariner 4 confirmation and a radiation study describing it as mostly comprising carbon dioxide. Several peer-reviewed papers only confirm carbon dioxide is present among the main compounds.

Verdict: SUPPORTED · 10 sources for, 0 against · Last checked

Evidence for · 10
Atmosphere of Mars
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Atmosphere of Mars. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Atmosphere_of_Mars

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More for · 9
Carbon dioxide clouds in an early dense Martian atmosphere
2003
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Colaprete, A. & Toon, O. B. (2003). Carbon dioxide clouds in an early dense Martian atmosphere. doi.org. https://doi.org/10.1029/2002je001967

Simulations of Halos Produced by Carbon Dioxide Ice Crystals in the Martian Atmosphere
2023
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Ding, J., Yang, P., Lemmon, M. T., & Zhang, Y. (2023). Simulations of Halos Produced by Carbon Dioxide Ice Crystals in the Martian Atmosphere. doi.org. https://doi.org/10.1029/2023gl103457

Buildup with Bremsstrahlung in the Martian Atmosphere
2020
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P., G. P. & T., C. K. (2020). Buildup with Bremsstrahlung in the Martian Atmosphere. inis.iaea.org. https://inis.iaea.org/records/a2jhd-9hn06

Space : now and into the future
1999
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1953-, G. I. (1999). Space : now and into the future. archive.org. https://archive.org/details/spacenowintofutu0000grah_f9n1

GCSE Higher Science exam practice workbook for AQA A+B
2007
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GCSE Higher Science exam practice workbook for AQA A+B. (2007). archive.org. https://archive.org/details/gcsehigherscienc0000unse

A science/literature unit for the magic school bus lost in the solar system by Joanna Cole
1996
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Joanna, C. (1996). A science/literature unit for the magic school bus lost in the solar system by Joanna Cole. archive.org. https://archive.org/details/scienceliteratur0000cole

Intercropping on Mars: A promising system to optimise fresh food production in future martian colonies
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Intercropping on Mars: A promising system to optimise fresh food production in future martian colonies. (n.d.). doi.org. https://doi.org/10.1371/journal.pone.0302149

arXiv: Variability of the methane trapping in martian subsurface clathrate hydrates
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arXiv: Variability of the methane trapping in martian subsurface clathrate hydrates. (n.d.). arxiv.org. https://arxiv.org/abs/0810.4359

Observation of O 2 1.27 μm dayglow by SPICAM IR: Seasonal distribution for the first Martian year of Mars Express
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Observation of O 2 1.27 μm dayglow by SPICAM IR: Seasonal distribution for the first Martian year of Mars Express. (n.d.). cir.nii.ac.jp. https://doi.org/10.1029/2006je002694

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