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The observatory's views, released Wednesday, include rare looks at Neptune's rings, providing some of the sharpest images of these ghostly features seen in more than 30 years, according to NASA ...
Neptune is the eighth and farthest known planet from the ... was found in 2013 by combining multiple Hubble images. [166] Because Neptune was the Roman god of the sea ...
All but the outer two are within Neptune-synchronous orbit (Neptune's rotational period is 0.6713 day or 16 hours [20]) and thus are being tidally decelerated. Naiad, the closest regular moon, is also the second smallest among the inner moons (following the discovery of Hippocamp), whereas Proteus is the largest regular moon and the second ...
A pair of Voyager 2 images of Neptune's ring system. The first mention of rings around Neptune dates back to 1846 when William Lassell, the discoverer of Neptune's largest moon, Triton, thought he had seen a ring around the planet. [2] However, his claim was never confirmed and it is likely that it was an observational artifact.
Astronomers have used telescope data to color-correct Voyager 2 images of Neptune and Uranus, revealing that the planets have a similar greenish blue hue.
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However, images taken by the Hubble Space Telescope in 1994 revealed that the Great Dark Spot had disappeared. [7] 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
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