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APOD: 2026 October 20 – An Anticrepuscular Rainbow Fan

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 20/10/2026, 13:20:26 UTC.

Briefings

A 2026 APOD image from Presenzano, Italy, captures an anticrepuscular rainbow fan where the Sun appears to be in front of the viewer rather than behind, contradicting standard rainbow physics. The photo was taken with a phone last week at sunset, and the unusual convergence of rays was noticed while hanging laundry. The event occurred on October 20, 2026, with the image credited to Aurelia Degli Esposti.

Key points

• The image shows an anticrepuscular rainbow fan where the Sun appears to be in front of the viewer rather than behind, contradicting standard rainbow physics.
• The photo was taken with a phone last week at sunset in Presenzano, Italy, and the unusual convergence of rays was noticed while hanging laundry.

Context

APOD features daily astronomical images with brief explanations by professional astronomers. This specific entry from October 2026 documents an unusual rainbow phenomenon where the Sun's apparent position is reversed, occurring in a sunlit fan near hills in Presenzano, Italy.

Limitations

Evidence is limited to a single APOD image from October 2026. The photo was taken with a phone, and the specific date of the sunset observation is not explicitly confirmed in the text. The phenomenon is described as unusual but not definitively proven as a rare occurrence.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 20/10/2026, 14:49:22 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

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