Mercury

• You would think that Mercury would have temperatures of 1,000 degrees because it is the closest planet to the sun.

• Its mass is 3.03e23 kilograms.

• Its diameter is 4,880 kilometers.

• By Roman mythology, Mercury is the god of commerce.

• The only spacecraft to have visited Mercury is the Mariner 10.

• In several ways, the moon is similar to Mercury. They both have very many craters in them, and they both are very old.

• Mercury is the eighth largest planet.

For more information on Mercury, click here.