Mercury

The Interior and Exterior

• Mercury has an iron core and a very thin mantle when compared to Earth.
• Mercury's surface is very rocky and has craters much like Earth's moon.

The Atmosphere

• Mercury has a thin atmosphere that contains oxygen, sodium, hydrogen, helium, and potassium.

Orbit and Rotation

• It takes 88 Earth days for Mercury to orbit Sun.
• It takes 59 Earth days for Mercury to rotate one time.

More Data

• Diameter: 3,032 miles
• Average distance from Sun: 36,000,000 miles
• Mass: 3.3010 x 10^3
• Surface Gravity by Comparison: If you weighed 100 pounds on Earth, you would weigh 38 pounds on Mercury.

Average Temperature

• - 173 degrees celsius/427 degrees celsius

Length of Day and Year

• A day on Mercury is 175.97 Earth days.
• A year on Mercury is 88 Earth days.

Moons

• Mercury has no moons whatsoever.

Fun Facts

• Mercury is the smallest planet in the Solar System.
• Mercury is the hottest planet because it is the closest planet to Sun.
• The Messenger was the first spacecraft to orbit Mercury!
• The Mariner 10 was the first spacecraft to land on Mercury!

Fun Facts

• Mercury can be seen with the naked eye!
• A day on Mercury is longer than a year on Mercury!

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