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Crescent Neptune and Triton • 05/27/23

Posted by Specola Profile 05/27/23 at 12:16PM Science - Tech - Astronomy See more by Specola

NASA Astronomy Picture of the Day:

Gliding through the outer Solar System, in 1989 the Voyager 2 spacecraft looked toward the Sun to find this view of most distant planet Neptune and its moon Triton together in a crescent phase. The elegant image of ice-giant planet and largest moon was taken from behind just after Voyager's closest approach. It could not have been taken from Earth because the most distant planet never shows a crescent phase to sunward eyes. Heading for the heliopause and beyond, the spacecraft's parting vantage point also robs Neptune of its familiar blue hue.

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