MARS AT A GLANCE

        Radius                  3,386           kilometers
        Area                    1.44x10^14      square meters
        Mass                    6.4x10^23       kilograms
        Gravity                 38%             of Earths
        Escape Velocity         5.0             kilometers per sec.
        Orbital Velocity        3.5             kilometers per sec
        Axial tilt              25.2            degrees
        Length of Day           1.03            Earth days
        Length of Year          686.9           Earth days
        Distance from Sun       227.9           million kilometers
        Atmosphere              1%              of Earths, mostly CO2
        Number of Moons         2               Phobos and Deimos