| Mars | Earth | |
| Mass | 0.11 | 1 |
| Diameter in miles | 4,223 miles | 7,926 miles |
| Diameter in kilometers | 6786 kilometers | 12,756 kilometers |
| Average Distance from Sun in miles | 141,600,000 | 93,000,000 m. |
| Average Distance from Sun in kilometers | 227,900 km. | 149,600,000 km. |
| Average Orbital Speed in miles per second | 18.6 | |
| Average Orbital Speed in kilometers per second | 30 | |
| Rotation(spinning once) | 24.5 hours | 24 hours |
| Revolution | 687 earth-days | 365 days |
| Surface gravity | 0.38 | 1 |
| Atmosphere | carbon dioxide, nitrogen | nitrogen, oxygen |
| Satellites | 2 | 1 |