Mars: Is the Surface Colored by Carbon Suboxide?

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Science  28 Nov 1969:
Vol. 166, Issue 3909, pp. 1141-1142
DOI: 10.1126/science.166.3909.1141


The reflection spectrum of Mars can be well matched from 0.2 through 1.6 microns (and farther) by polymers of carbon suboxide, reflection spectra for which have now been measured. We propose that the reddish color of Mars might be attributed to carbon suboxide, not the commonly considered limonite or other iron-bearing minerals.

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