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Astronomy Picture of the Day - Unicorn, Fox Fur and Christmas Tree
NASA ^ | 25 Dec, 2025 | Image Credit & Copyright: Michael Kalika

Posted on 12/25/2025 10:59:01 AM PST by MtnClimber

Explanation: A star forming region cataloged as NGC 2264, this beautiful but complex arrangement of interstellar gas and dust is about 2,700 light-years distant in the faint but fanciful constellation Monoceros, the Unicorn. Seen toward the celestial equator and near the plane of our Milky Way galaxy, the seasonal skyscape mixes reddish emission nebulae excited by energetic light from newborn stars with dark interstellar dust clouds. Where the otherwise obscuring dust clouds lie close to the hot, young stars, they also reflect starlight, forming blue reflection nebulae. In fact, bright variable star S Monocerotis is immersed in a blue-tinted haze near center. Arrayed with a simple triangular outline above S Monocerotis, the stars of NGC 2264 are popularly known as the Christmas Tree star cluster. Carved by energetic starlight, the Cone Nebula sits upside down at the apex of this cosmic Christmas tree while the dusty, convoluted pelt of glowing gas and dust under the tree is called the Fox Fur Nebula. This rich telescopic frame spans about 1.5 degrees or 3 full moons on the sky top to bottom, covering nearly 80 light-years at the distance of NGC 2264.


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

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1 posted on 12/25/2025 10:59:01 AM PST by MtnClimber
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To: MtnClimber

2 posted on 12/25/2025 10:59:32 AM 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 12/25/2025 11:01:48 AM 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

Merry Christmas and Happy New Year to all.


4 posted on 12/25/2025 11:02:48 AM 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

Wow.


5 posted on 12/25/2025 11:26:54 AM PST by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber

Wow.


6 posted on 12/25/2025 11:26:54 AM PST by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber


7 posted on 12/25/2025 11:30:38 AM PST by Diogenesis (Si vis pacem, para bellum)
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To: MtnClimber

Now they are saying there are 2 trillion galaxies out there. The red shift in a galaxy far, far away.


8 posted on 12/25/2025 11:53:42 AM PST by NavyShoe
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