PlanetViewer

Mercury

Terrestrial Planet

Mercury is the smallest planet in the solar system and is the closest planet to the sun. Mercury also has the shortest orbital period of all the planets.

Average Temperature

354° F

Day Length

58 days

Orbital Period

88 days

Number of Moons

0 moons

Distance from the Sun

42M mi.

Fun Fact: Despite being the closest planet to the sun, Mercury is not the hottest planet in the solar system.

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