4,879 km
Diameter
3.301 × 10²³
Mass
88 days
Orbit
1,407.6 hrs
Day Length
0
Moons
-180 to 430°C
Avg Temp
The smallest planet in our solar system and closest to the Sun. A world of extremes where temperatures swing from freezing cold to scorching hot.
Did you know? A year on Mercury is just 88 Earth days, but a day lasts 59 Earth days — you'd have two birthdays before you finished one lunch!
Atmosphere
Thin exosphere: oxygen, sodium, hydrogen, helium, potassium
Interactive 3D Model
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