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Neptune's atmosphere is faintly blue in the optical spectrum, only slightly more saturated than the blue of Uranus's atmosphere. Early renderings of the two planets greatly exaggerated Neptune's colour contrast "to better reveal the clouds, bands and winds", making it seem deep blue compared to Uranus's off-white.
Neptune Odyssey is a flagship orbiter mission concept with similar goals as Trident and is targeted for a launch date of 2033. These missions have a high focus on learning more about Neptune's largest moon Triton, but also aim to gain more information about the atmosphere of Neptune.
Also seen in Neptune's upper atmosphere was an almond-shaped spot designated D2 and a bright, quickly moving cloud high above the cloud decks dubbed "Scooter". [4] [8] Voyager 2 image of Proteus. The fly-by of the Neptunian system provided the first accurate measurement of Neptune's mass, which was found to be 0.5 percent less than previously ...
Neptune was discovered in 1846 and is located 30 times farther from the sun than Earth. The planet's 164-year orbit takes it through some of the darkest and most remote regions of the outer solar ...
Neptune, for example, has an atmosphere made of hydrogen and helium (with just a tinge of methane), and it doesn’t really have a surface—or, at least, not what we think of as a surface.
Neptune has long been known to have white clouds circling it, but images of the furthest planet in the solar system have shown this changing over time - the most recent image, taken by the Hubble ...
Triton, Neptune's largest moon, has a tenuous nitrogen atmosphere with small amounts of methane. Tritonian atmospheric pressure is about 1 Pa . The surface temperature is at least 35.6 K, with the nitrogen atmosphere in equilibrium with nitrogen ice on Triton's surface.
English: Diagram of the planet Neptune. Upper atmosphere, top clouds. Atmosphere consisting of hydrogen, helium, and methane gas. Mantle consisting of water, ammonia, and methane ices. Core consisting of rock (silicates and nickel-iron).