Overview of Mercury |
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Image of Mercury |
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| Position from the Sun | 1st Planet |
| Orbital Period | 88 Earth days |
| Diameter | 4,880 km |
| Mass | 3.30 × 1023 kg |
| Moons | None |
| Atmosphere | Thin, mostly oxygen, sodium, hydrogen, helium, and potassium |
| Surface Features | Craters, plains, cliffs |
| Temperature Range | -173°C to 427°C |
| Interesting Fact | Mercury has no atmosphere to retain heat, causing extreme temperature variations. |
Learn more about Mercury.