Mars:
The Red Planet
The god of war. The red planet. Mars. The fourth planet from the sun, Mars is too cold to have life. Mars has two moons, Deimos and Phobos. Mars has the largest mountain in the Solar System, Olympus Mons. Mars has a rotation of 24 hours and 37 minutes and its revolution is 687 Earth days. It has a diameter of 6,787 km or 4,217 miles. The average surface temperature is -63 degrees Celsius (-81 degrees Fahrenheit). The major atmospheric gas is carbon dioxide. It has an axial tilt of 52.2 degrees. The major difference between Earth and Mars is the difference in the year.