APOD on Nostr: **Astronomy Picture of the Day** 23 June 2026 **Flying Past Neptune's Moon Triton** ...
**Astronomy Picture of the Day**
23 June 2026
**Flying Past Neptune's Moon Triton**
Image:
Image Credit: NASA ; JPL , Voyager 2, Digital composition: Paul Schenk ( LPI , USRA )
What would it look like to fly past Triton , the largest moon of planet Neptune ? Only one spacecraft has ever done this -- and the images of this dramatic encounter have been gathered into a video . In 1989, the Voyager 2 robotic spacecraft shot through the Neptune system with cameras blazing. Triton is slightly smaller than Earth's Moon but has ice volcanoes and a surface rich in frozen nitrogen . The first sequence in the video shows Voyager's approach to Triton , which, with the exception of an overall false green tint , appears in approximately true color. The mysterious cantaloupe terrain seen under the spacecraft soon changed from light to dark, with the terminator of night crossing underneath . After closest approach, Voyager pivoted to see the departing moon, now visible as a diminishing crescent . In 2015, the robotic New Horizons spacecraft famously flew past Pluto , an orb of similar size to Triton.
#APOD #Voyager2 #Triton #Neptune #IcyMoons #FrozenNitrogen
https://apod.nasa.gov/apod/ap260623.htmlPublished at
2026-06-23 04:05:28 UTCEvent JSON
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"content": "**Astronomy Picture of the Day**\n\n23 June 2026\n\n**Flying Past Neptune's Moon Triton**\n\nImage: https://www.shutterstock.com/image-photo/british-shorthair-cat-hiding-under-260nw-1655111092.jpg\n\nImage Credit: NASA ; JPL , Voyager 2, Digital composition: Paul Schenk ( LPI , USRA )\n\nWhat would it look like to fly past Triton , the largest moon of planet Neptune ? Only one spacecraft has ever done this -- and the images of this dramatic encounter have been gathered into a video . In 1989, the Voyager 2 robotic spacecraft shot through the Neptune system with cameras blazing. Triton is slightly smaller than Earth's Moon but has ice volcanoes and a surface rich in frozen nitrogen . The first sequence in the video shows Voyager's approach to Triton , which, with the exception of an overall false green tint , appears in approximately true color. The mysterious cantaloupe terrain seen under the spacecraft soon changed from light to dark, with the terminator of night crossing underneath . After closest approach, Voyager pivoted to see the departing moon, now visible as a diminishing crescent . In 2015, the robotic New Horizons spacecraft famously flew past Pluto , an orb of similar size to Triton.\n\n#APOD #Voyager2 #Triton #Neptune #IcyMoons #FrozenNitrogen\n\nhttps://apod.nasa.gov/apod/ap260623.html\n",
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