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NEPTUNE is the largest installation on the Ocean Networks Canada network of ocean observatories. Since December 2009, it has allowed people to "surf" the seafloor while ocean scientists run deep-water experiments from labs and universities around the world.
Neptune is the fourth largest planet in the Solar System and the third most massive. Neptune is 17 times the mass of Earth, but just 1 ⁄ 18 the mass of Jupiter. Neptune is a little bit more massive than Uranus, though Neptune is denser and smaller in size than Uranus.
Neptune has been associated with a number of other Roman deities. By the first century BC, he had supplanted Portunus as the god of naval victories; Sextus Pompeius called himself the "son of Neptune". For a time, Neptune was paired in his dominion of the sea with Salacia, the goddess of saltwater.
There is evidence that Neptune was seen and recorded by Galileo Galilei in 1613, Jérôme Lalande in 1795, and John Herschel in 1830, but none are known to have recognized it as a planet at the time. [6] These pre-discovery observations were important in accurately determining the orbit of Neptune.
Neptune is the eighth and farthest known planet from the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth and slightly more massive than fellow ice giant Uranus.
Dark, cold and whipped by supersonic winds, giant Neptune is the eighth and most distant major planet orbiting our Sun. More than 30 times as far from the Sun as Earth, Neptune is not visible to the naked eye. In 2011, Neptune completed its first 165-year orbit since its discovery.
Neptune is one of two ice giants in the outer solar system (the other is Uranus). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core. Of the giant planets, Neptune is the densest.
Jun 26, 2024 · Neptune, third most massive planet of the solar system and the eighth and outermost planet from the Sun. Because of its great distance from Earth, it cannot be seen with the unaided eye. With a small telescope, it appears as a tiny, faint blue-green disk. It is designated by the symbol ♆.
Mar 28, 2019 · As the windiest, furthest, and faintest planet in our solar system, Neptune is a fascinating world of superlatives. Learn more about the eighth planet in our solar system. Skip to content
Neptune Facts. Average temperature: -201°C (-331°F) where atmospheric pressure equals sea level on Earth. Average distance from Sun: 4,495 million kilometers (2,793 million miles), or 30 times farther from the Sun than Earth. Diameter: 49,528 kilometers (30,775 miles), Neptune is 3.9 times wider than Earth.
