Neptune, Triton, Rings, and Stars

Neptune-South-Pole-Voyager-2_950x682Voyager 2 took the images used to produce this picture of the Neptunian system as it was outbound from the planet on 25 August, 1989. Cruising through the outer solar system, the Voyager 2 spacecraft made its closest approach to Neptune on August 25, 1989, the only spacecraft to visit the most distant gas giant. The image captures the planet and Triton as thin sunlit crescents. A close look shows cirrus clouds and a dark band circle Neptune’s south polar region, with a cloudy vortex above the pole itself. (Pole is just past 6:30 on the planet in this orientation.) Parts of the very faint ring system that was discovered during the Voyager 2 flyby are also visible. The background starfield is composed from sky survey data centered on the constellation Camelopardalis, corresponding to the outbound Voyager‘s point of view.

Image Credit: NASA

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