Mercury is the closest planet  to the sun
the mass of the murcury is330,104,000,000,000 bilion kg
mercury is the only second hottest planet
mercury is very small to the earth
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Mercury is the first planet of pur solar system. It's diameter is about 4,880km. It has mass about 3,302,000,000,000 tonnes. An average distance from Sun is about 57,909,175km. It completely rotates in 58.969 days. Its average temperature is +166.86°C. It has 0 moons. It was named after the speedy messenger of the Gods because it seemed to move more quickly than the other planets. In 2004, NASA launched MESSENGER probe, which is due to reach Mercury in 2011.
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