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Why is Mars orange?

Why is Mars orange?
Class 1S from Greater London (age 5-14)

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One Response

  1. Mars appears a red/orange colour because it has a lot of iron oxide on its surface. Iron oxide is just rust, the same rust you see on cars, bridges and other objects here on Earth. This rust reflects the light from the Sun and we see Mars as mostly red in colour.

    For more space and science related fun visit, http://www.sciencemadefun.org.uk

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