Planet Details
Mars
The second-smallest planet in the Solar System, known as the "Red Planet" due to its reddish, iron-oxide-rich surface.
Key Facts
Type
Terrestrial
Day Length
24.6 Hours
Year Length
687 Earth Days
Gravity
3.7 m/s²
Course Information
Mars is the fourth planet from the Sun and has a thin atmosphere, composed primarily of carbon dioxide. Its surface features are reminiscent of both the impact craters of the Moon and the volcanoes, valleys, deserts, and polar ice caps of Earth. It is a cold, desert-like world with evidence of ancient floods.