Neptune

Neptune is the eighth and farthest-known planet from the Sun in the Solar System. Named for the Roman god of the sea, it is the fourth-largest planet by diameter and the third-largest by mass. Neptune is known for its strong winds and active weather patterns, with winds reaching up to 2,100 km/h (1,300 mph), the fastest in the Solar System. The planet is composed primarily of gases and ices, with a rocky core. Neptune's atmosphere is composed primarily of hydrogen and helium, with traces of methane that give the planet its distinctive blue color. Neptune in Hebrew is נפטון, in Spanish it is Neptuno, in French Neptune, in German Neptun, and in Japanese 海王星 (Kaiōsei). Neptune was discovered on September 23, 1846, and is notable for its 14 known moons, the largest of which is Triton, discovered shortly after Neptune itself. The planet also has a faint and incomplete ring system.