Neptune, taken by Voyager 2 (false color)

Neptune - The Planets

neptune

Neptune is the eighth or, occasionally, the ninth planet from the Sun due to Pluto's eccentric orbit (if Pluto is considered a planet), and the outermost gas giant in our solar system. Although the smallest of the gas giants, Neptune is more massive than Uranus: Its stronger gravitational field has compressed it to a higher density.