Mars is the fourth planet from the sun. With a diameter of 4,228 miles 

It is the second smallest planet in the solar system after Mercury

The lack of a thick atmosphere makes it difficult for heat from the sun to circulate around the planet

During the winter, the Martian ice caps grow in size as more dry ice condenses to the surface.

While During the summer, warmer temperatures turn the dry ice back into carbon monoxide gas and the ice caps retreat

Geographically, Mars is characterized by two separate regions: the Highlands and the Lowlands

The Highlands are located across the Southern Hemisphere of Mars

 The Lowlands stretch across the Northern Hemisphere

 Generally, the Highlands are defined as having an abundance of impact craters and older surface features. The Lowlands are the complete opposite

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