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Learn about Neptune, the eighth and most distant planet from the Sun, with 16 moons and five rings. See how it was discovered, what it looks like, and how it compares to Earth and other planets.
- Neptune: Facts
Neptune is one of two ice giants in the outer solar system...
- Neptune
Neptune is dark, cold, and very windy. It's the last of the...
- Neptune: Facts
2 days ago · Neptune has 14 moons (natural satellites), only two of which had been discovered before the Voyager 2 spacecraft flew past the planet in 1989, and a system of rings, which had been unconfirmed until Voyager’s visit. As is the case for Uranus, most of what astronomers know about Neptune, including its rotation period and the existence and ...
- When was Neptune discovered?Neptune was discovered on September 23, 1846. It is the second planet to be found using a telescope. Although Johann Gottfried Galle and Heinrich L...
- How many moons does Neptune have?Neptune has 14 moons (natural satellites). Before Voyager 2's flyby of the planet, Neptune's only known moons were Triton and Nereid. Neptune's moo...
- What gases are present in Neptune's atmosphere?Neptune’s outer atmosphere is composed predominantly of hydrogen and helium, contributing to 98 percent of the atmospheric molecules. Most of the r...
- Can Neptune be seen without a telescope?Neptune is the only giant planet that is not visible without a telescope. It has an apparent magnitude of 7.8 and is approximately one-fifth as bri...
- What is the color of Neptune?Neptune’s color is a very vivid, bright blue, presumably an effect of the presence of methane and an unidentified atmospheric gas. With a small tel...
NEPTUNE is the world's first regional-scale underwater ocean observatory that plugs directly into the Internet. [1] 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 ...
- 5.43 km/s
- 0.6713 day, 16 h 6 min 36 s
- 2.68 km/s (9,650 km/h)
Learn about Neptune, the eighth and most distant planet in our solar system, named after the Roman god of the sea. Find out about its size, orbit, moons, rings, atmosphere, and more.
Apr 17, 2023 · Neptune is the fourth largest planet in the solar system, with a radius of 15,599.4 miles (24,622 kilometers) — the distance between its core and the surface.
