THE PLANETS.
| Mean Distance from the Sun in Millions of Miles. | Periodic Time of Revolution in Days. | Diameter of Planet in Miles. | Axial Rotation. | |||
| Hrs. | Mins. | Secs. | ||||
| Mercury | 35.9 | 87.969 | 2,992 | Uncertain. | ||
| Venus | 67.0 | 224.70 | 7,660 | Uncertain. | ||
| Earth | 92.7 | 365.26 | 7,918 | 23 | 56 | 4.09 |
| Mars | 141 | 686.98 | 4,200 | 24 | 37 | 22.7 |
| Jupiter | 482 | 4,332.6 | 85,000 | 9 | 55 | — |
| Saturn | 884 | 10,759 | 71,000 | 10 | 14 | 23.8 |
| Uranus | 1,780 | 30,687 | 31,700 | Unknown. | ||
| Neptune | 2,780 | 60,127 | 34,500 | Unknown. | ||