Question

Why Mars have rust surface?
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Answer 1

Answer:

Mars is red now, but it may have looked like charcoal in the past. ... The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue.

Answer 2

Answer:

Explanation:

Mars is red now, but it may have looked like charcoal in the past. The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue.