Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury . The latter refers to the effect of the iron oxide prevalent on Mars's surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye.

Mars

by kongle

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury . The latter refers to the effect of the iron oxide prevalent on Mars's surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye.

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