Mars is the fourth planet from the sun and the second smallest planet in the solar system. It is also known as the Red Planet due to its reddish appearance, which is caused by iron oxide (rust) on its surface. Mars is a rocky planet and has a thin atmosphere, polar ice caps, and seasons due to its axial tilt. It is also home to the largest volcano and the longest canyon in the solar system.

Mars has long been of interest to humans because it is similar to Earth in many ways, and there is evidence that it may have once had liquid water on its surface. As a result, it is a prime target for exploration by NASA and other space agencies, and there have been numerous missions to the planet to study it and search for signs of past or present life.

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