| Term | Definition |
|---|
| Mercury's density | 5.44 |
| Mercury's surface gravity | 378 |
| Mercury's AU | .4 |
| Mercury's axial tilt | 0 |
| most affected by suns gravity | Mercury |
| thousands of craters | Mercury |
| Caloris Basin | Mercury, 1300 km diameter |
| Mercury's temperatures | 600F/-250F |
| Mercury's atmosphere | thin sodium gas |
| greatest temperature difference planet | Mercury |
| Mariner 10 took photos of | Mercury |
| Venus's clouds | thick, constantly moving, no visibility |
| Venus density | 5.25 g/cm3 |
| Venus's surface gravity | 0.9 |
| Venus's rotational peroid | 243 days |
| Venus axial tilt | 3 |
| Venus's A.U. | 7 |
| Venus's revolution/year | 223 |
| How to die on Venus | 1. Roasted, 900 degrees, 2. Crushed, 95% CO2, 3. Suffocate, no oxygen, 4. Corrode, sulferic acid mist and exothermic reaction |
| Mars in comparison | mercury<mars<earth |
| Mars's atmosphere | thin |
| Mars features | Olympus Mans (texas), Canalis, craters near frozen CO2 |
| Mercury's core | iron, partly molten |
| Mercury's moons | none |
| 6th largest planet | Venus |
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