Neptune is the eighth and farthest known PLANET from the Sun in the Solar System. It is named after the Roman GOD of the sea, who is also known as the Greek GOD Poseidon. Neptune is the fourth-largest PLANET by diameter and the third-most-massive PLANET. It is also the densest giant PLANET. Neptune is known for its strong winds and storms, which can reach speeds of up to 2, 100 kilometers per hour. In addition to being a PLANET, Neptune is also a GOD, specifically the Roman GOD of the sea. He is often depicted with a trident and is associated with horses and dolphins. Neptune is also known as the Greek GOD Poseidon, who is the brother of Zeus and Hades. He is the ruler of the seas and is often depicted riding a chariot pulled by horses or sea creatures. Finally, Neptune is also known as a seagod, which is a deity associated with the sea, oceans, and other water bodies.