Moons: 0
Period of Rotation: 59 days
Period of Revolution: 88 days
Inner/Outer planet: Inner
Terrestrial/gaseous planet: Terrestrial
Distance from Sun: 57,000,000 km.
Atmospheric composition: small parts of hydrogen, helium, oxygen, sodium, potassium, calcium, and magnesium
Core composition: iron
Mass: 3.30e23 kg.
Diameter: 4,878 km. (3031 mi.)
maximum temperature: 800 degrees F
minimum temperature: -300 degrees F
Discovered: by the Ancient Greeks in the 3rd millennium BC
Tilt of axis: 0 degrees
planetary symbol:
space flights/probes: Mariner 10 and MESSENGER
special features: Caloris Basin
Mercury's core makes up 75% of the planet. It is the second most dense planet in the solar system and it's name is the Greek god of commerce.
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