What gives Mars its distinctive reddish hue?
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The surface of Mars is rich in iron minerals, which, when exposed to oxygen, rust and form iron oxides. This process gives the planet its iconic red-orange appearance, earning it the nickname 'The Red Planet.' Intriguingly, Mars's atmosphere is very thin, yet this oxidation process still occurred over billions of years. Photo: Kevin Gill from Los Angeles, CA, United States, Wikimedia Commons, CC BY 2.0.
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Source: Wikipedia (CC BY-SA)
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