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Mercury
Terrestrial · No moons
The smallest planet and the swiftest, Mercury races around the Sun in just 88 days. Its cratered face recalls the Moon, while its iron core burns beneath a thin shell of rock.
0.39 AU from the Sun
Terrestrial · No moons
Did You Know
- ◆A year on Mercury lasts only 88 Earth days.
- ◆Surface temperatures swing from -180°C to 430°C.
- ◆In alchemy, Mercury is quicksilver — the hermetic principle of exchange.