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Astronomy Picture of the Day - The Persistence of Sunlight
NASA ^ | 25 Apr, 2026 | Image Credit & Copyright: Lorenzo Busilacchi

Posted on 04/25/2026 12:10:24 PM PDT by MtnClimber

Explanation: This seaside sunset offered a surreal experience, captured in a sea and skyscape from the west coast of Sardinia, Italy, planet Earth. The Daliesque scene is a composition of sequential exposures made with a camera and long telephoto lens. The Sun is not melting, though. Its shifting and fluid appearance as it nears the horizon is caused as refraction along the line of sight changes and creates distorted images or mirages of the reddened solar disk. The changes in atmospheric refraction correspond to atmospheric layers with sharply different temperatures and densities. Another famous but fleeting effect of atmospheric refraction produced by a long sight-line to the setting (or rising) Sun is often called the green flash.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 04/25/2026 12:10:24 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 04/25/2026 12:10:49 PM PDT 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 04/25/2026 12:11:39 PM PDT 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

Oh, what a world!


4 posted on 04/25/2026 12:56:12 PM PDT by NavyShoe
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To: MtnClimber

I can’t help but think that the setting Sun looks like an egg yolk getting lower and lower.🙂 I would love to visit Sardinia some day. It’s a bucket list destination. I think that that’s all it will ever be. Beautiful place.


5 posted on 04/25/2026 1:47:04 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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To: MtnClimber

I can’t help but think that the setting Sun looks like an egg yolk getting lower and lower.🙂 I would love to visit Sardinia some day. It’s a bucket list destination. I think that that’s all it will ever be. Beautiful place.


6 posted on 04/25/2026 1:47:04 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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