| Venus | Earth |
| Mass | 0.81 | 1 |
| Diameter in miles | 7,519 miles | 7,926 miles |
| Diameter in kilometers | 12,100 kilometers | 12,756 kilometers |
| Average Distance from Sun in miles | 67,200,000 m. | 93,000,000 m. |
| Average Distance from Sun in kilometers | 108,200,000 km. | 149,600,000 km. |
| Average Orbital Speed in miles per second | 21.8 | 18.6 |
| Average Orbital Speed in kilometers per second | 35.1 | 30 |
| Rotation(spinning once) | 243 earth-days | 24 hours |
| Revolution | 224 earth-days | 365 days |
| Surface gravity | 0.879 | 1 |
| Atmosphere | carbon dioxide, nitrogen | nitrogen, oxygen |
| Satellites | 0 | 1 |