Classification: Terestrial Planet

Length of Year: 687 Earth Days

Length of Day: 24.66 hr

Diameter: 6,746 km (0.533 x Earth's)

Mass: 6.4219e23 kg (0.107 x Earth's)

Moons: (2) Phobos and Deimos

Gravity: 0.379 x Earth's

Atmosphere: 95.32% Carbon Dioxide, 2.7% Nitrogen, 1.6% Argon

Mars is the fourth planet from the sun. It is believed to have once contained water. It is the farthest of the terestrial planets from the Sun. In between Mars and Jupiter is an asteroid belt.