Neptune is the furthest planet from the Sun which also makes it the coldest.
There are many large storms on Neptune, one of which is called the Great Dark Spot, which resembled the Great Red Spot on Jupiter. You will see more information about this storm on post Jupiter.
It was named after the Roman god of the sea, Neptune, because it has got so many dark seas and storms.
It was discovered by the astronomers Urbain Le Verrier, Johann Galle and John Couch Adams.
Geysers have been observed on Neptune’s largest moon, Triton, which can also be found on Earth and also signs of carbon dioxide eruptions on the the southern polar cap of Mars