The eighth planet from the Sun — well, some of the time it`s eighth, but more on that later — has a rocky core surrounded by ice, hydrogen, helium and methane. Like the other gas planets, Neptune has rapidly swirling winds, but it is thought to contain a deep ocean of water. Its quick rotation fuels fierce winds and myriad storm systems. The planet has a faint set of rings and 8 known moons. Because of Pluto`s strange orbit, Neptune is sometimes the most distant planet from the Sun. Since 1979, Neptune was the ninth planet from the Sun. On February 11, 1999, it crossed Pluto`s path and once again become the eighth planet from the Sun, where will remain for 228 years. Neptune was discovered in 1846 after mathematical calculations of Uranus` movements predicted the existence of another large body.