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Astronomy Picture of the Day - NGC 7023: The Iris Nebula
NASA ^ | 16 Jan, 2026 | Image Credit & Copyright: Justus Falk

Posted on 01/16/2026 11:45:06 AM PST by MtnClimber

Explanation: These cosmic clouds have blossomed 1,300 light-years away in the fertile starfields of the constellation Cepheus. Called the Iris Nebula, NGC 7023 is not the only nebula to evoke the imagery of flowers. Still, this deep telescopic image shows off the Iris Nebula's range of colors and symmetries embedded in surrounding fields of interstellar dust. Within the Iris itself, dusty nebular material surrounds a hot, young star. The dominant color of the brighter reflection nebula is blue, characteristic of dust grains reflecting starlight. Central filaments of the reflection nebula glow with a faint reddish photoluminescence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Infrared observations indicate that this nebula contains complex carbon molecules known as PAHs. The dusty blue petals of the Iris Nebula span about six light-years.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa

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1 posted on 01/16/2026 11:45:07 AM PST by MtnClimber
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To: MtnClimber

2 posted on 01/16/2026 11:45:37 AM PST by MtnClimber (For photos of scenerHow y, 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 01/16/2026 11:46:31 AM PST by MtnClimber (For photos of scenerHow y, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

4 posted on 01/16/2026 12:01:51 PM PST by Diogenesis (Si vis pacem, para bellum)
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To: MtnClimber

Wow.


5 posted on 01/16/2026 12:12:22 PM PST by No name given ( Anonymous is who you’ll know me as )
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To: Diogenesis

Beautiful.


6 posted on 01/16/2026 12:12:29 PM PST by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber

Am I the only one who sees a face?


7 posted on 01/16/2026 3:40:35 PM PST by StevenWH
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