Neptune is the eighth and farthest planet from the sun in our solar system, and it is the fourth largest planet in terms of diameter. It is named after the Roman god of the sea because of its deep blue color, which is caused by the presence of methane gas in its atmosphere. Neptune was discovered on September 23, 1846, by the French astronomer Urbain Le Verrier, who had predicted its existence based on irregularities in the orbit of Uranus. The discovery of Neptune was a significant moment in th