Labels:amusement park | apron | ball | bulletin board | circle | conveyer belt | monitor | rock | sky OCR: Mars Global Surveyor Project Simple Facts JP About Mars Diameter: 6.794 km (53% of Earth Mars Day: 24 hrs, 37 min Mars Year: 687 Earth Days Mass 11% of Earth Gravity 38% of Earth Atmosphere 95% Carbon Dioxide 3% Nitrogen Atmospheric Earth Sea Level Pressure Temperature Average Between at Surface -140 to 20 Celsius NASA Nitroger ospheric
