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Astronomy Picture of the Day - A Solstice Sun Tattoo
NASA ^ | 20 Dec, 2025 | Image Credit & Copyright: Marcella Pace

Posted on 12/20/2025 12:24:58 PM PST by MtnClimber

Explanation: The word solstice is from the Latin for Sun and to pause or stand still. And in the days surrounding a solstice the Sun's annual north-south drift in planet Earth's sky does slow down, pause, and then reverse direction. So near the solstice the daily path of the Sun through the sky really doesn't change much. In fact, near the December solstice, the Sun's consistent, low arc through northern hemisphere skies, along with low surface temperatures, has left a noticeable imprint on this path to the mountain town of Peaio in northern Italy. The morning frost on the road has melted away only where the sunlight was able to reach the ground. But it remains in the areas persistently shadowed by the fence, tattooing in frost an image of the fence on the asphalt surface.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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1 posted on 12/20/2025 12:24:58 PM PST by MtnClimber
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To: MtnClimber

2 posted on 12/20/2025 12:25:19 PM PST by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...

Pinging the APOD list

🪐 🌟 🌌 🍔


3 posted on 12/20/2025 12:26:05 PM PST by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

I thought it was a bicycle lane at first.


4 posted on 12/20/2025 12:26:37 PM PST by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

Nice. Thank you for posting these threads.


5 posted on 12/20/2025 12:35:54 PM PST by BenLurkin (The above is not a statement of fact. It is opinion or satire. Or both.)
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To: MtnClimber

Too cold....


6 posted on 12/20/2025 1:09:25 PM PST by doorgunner69
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To: MtnClimber

Yes. I thought, what a stupid idea, make bicycle lane as big than the car one.


7 posted on 12/20/2025 1:50:23 PM PST by AZJeep (sane )
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To: MtnClimber

The fence must be run more or less north-south right angles to the direction of rising sun. The sun is apparently peeking over a mountain ridge fairly high up, to right and easterly, and the fence’s shadow is moving left to right in that picture. That is the result of about an hour’s sunlight exposure, not several days.


8 posted on 12/20/2025 3:33:36 PM PST by Lonesome in Massachussets ( )
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To: MtnClimber

The solstice deals with the position of the sun at sunrise and sunset but has little effect on its up and down motion. It does relate to the actual times of sunrise and sunset. I think that the picture simply indicates that the sun melted the non-shadowed frost on the road after it rose, and the photographer just happened to catch it. Solstice day was not a factor other than winter is the time when frost can be on the road.


9 posted on 12/20/2025 6:17:59 PM PST by norwaypinesavage (Freud: projection is a defense mechanism of those [Leftists] struggling with inferiority complexes)
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To: norwaypinesavage

I agree, Solstice had nothing to do with the photo.


10 posted on 12/20/2025 6:29:29 PM PST by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

https://greenflash.photo/portfolio/tatoo-solar/


11 posted on 12/20/2025 7:33:52 PM PST by DigitalVideoDude (It's amazing what you can accomplish when you don't care who gets the credit. -Ronald Reagan)
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