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Birthday · April 7, 2026

IC 4592: The Blue Horsehead Reflection Nebula

April 7, 2026

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Selected image source ↗ APOD published April 7, 2026. Credit: Rabeea Alkuwari. A publication-date match, not a photo taken on your date. Independent of NASA.

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IC 4592: The Blue Horsehead Reflection Nebula

Original APOD · April 7, 2026 ↗

Read the original APOD for the astronomer’s explanation and full image credits. Its text is preserved in the archive as published.

Read the archived explanation

Do you see the horse's head? What you are seeing is not the famous Horsehead nebula toward Orion, but rather a fainter nebula that only takes on a familiar form with deeper imaging. The main part of the here-imaged molecular cloud complex is reflection nebula IC 4592. Reflection nebulas are made up of very fine dust that normally appears dark but can look quite blue when reflecting the visible light of energetic nearby stars. In this case, the source of much of the reflected light is a star at the eye of the horse. That star is part of Nu Scorpii, one of the brighter star systems toward the constellation of the Scorpion (Scorpius). A second reflection nebula dubbed IC 4601 is visible surrounding two stars just below the image center. The featured picture was taken from Sawda Natheel in Qatar. Jigsaw Nebula: Astronomy Puzzle of the Day

Image credit: Rabeea Alkuwari

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