28 janv. 1719 - Neptune

Description:

Neptune is a gas giant, and it is the furthest planet in the solar system. It has 14 moons. It speriod of rotation is 16 hours and 6 minutes. Its period of revolution is 165 years. The average temperature on Neptune is minus 392 degrees fahrenheit . It is made out of 80% hydrogen and 19% helium. Neptune is also the coldest planet in the solar system. Its distance from the sun is 30 AU.