Mars is called the red planet. Why?

1 Answer
Jade
Mar 14, 2018

Mars is called red planet because of the reddish hue on its surface.The hue comes from the fact that the surface is rusty, as in, it’s rich in iron oxide.
Iron left out in the rain and will get covered with rust as the oxygen in the air and water reacts with the iron in the metal to create a film of iron oxide.

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