Mercury

Planet Profile:

First Record:

14th Century BC

Discovered by:

Unknown

Diameter:

4,879 km

Mass:

3.30 x 10^23 kg (5.5% Earth)

Surface Temp:

-173 to 427°C

Quick Facts:

• Mercury does not have any moons or rings
• Your weight on Mercury would be 38% of your weight on Earth
• A day on the surface of Mercury lasts 176 Earth days
• A year on Mercury takes 88 Earth days
• Mercury has a diameter of 4,879 km, making it the smallest planet
• It’s not known who discovered Mercury.

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