# Mars

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Mars is the fourth planet from the Sun and the second smallest planet in the Solar System. Mars is a terrestrial planet with a thin atmosphere.

The rotational period and seasonal cycles of Mars are likewise similar to those of Earth. Mars has approximately half the diameter of Earth. It is less dense than Earth. Its surface area is only slightly less than the total area of Earth's dry land.

Mars is a terrestrial planet that consists of minerals containing silicon and oxygen, metals, and other elements that typically make up rock.

Mars's average orbital period is 687 Earth days.

It is also known as the as the "Red Planet".

Mars has two moons, Phobos and Deimos, which are small and irregularly shaped.