Neptune

Neptune is the eighth and outermost planet in our solar system. It is the fourth-largest planet by diameter and the third-largest by mass; Neptune is 17 times the mass of Earth and is slightly more massive than its near twin Uranus which is 14 Earth Masses, but slightly smaller due to its higher density. The planet is named after the Roman god of the sea. Its astronomical symbol is a stylized version of the god’s trident (♆).