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Astronomy Picture of the Day- Government shutdown so no APOD Today. I will dig up some of my favorites - One-Armed Spiral Galaxy NGC 4725
NASA ^ | 16 Apr, 2016 | Image Credit & Copyright: Martin Pugh

Posted on 10/19/2025 1:45:28 PM PDT by MtnClimber

Explanation: While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. In this sharp color composite image, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices. Computer simulations of the formation of single spiral arms suggest that they can be either leading or trailing arms with respect to a galaxy's overall rotation. Also included in the frame, sporting a noticably more traditional spiral galaxy look, is a more distant background galaxy.


TOPICS: Astronomy; Science
KEYWORDS: apod; astronomy; martinpugh; nasa; ngc4725; science

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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 10/19/2025 1:45:28 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 10/19/2025 1:45:58 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 10/19/2025 1:46:57 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

4 posted on 10/19/2025 1:49:39 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

ICWYDT. Heh. :-)


5 posted on 10/19/2025 1:58:19 PM PDT by AFB-XYZ (( We have two options: 1. Stand up, or 2. Bend over))
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To: MtnClimber

Richard Kimble has been looking for this galaxy.


6 posted on 10/19/2025 2:14:09 PM PDT by ClearCase_guy (Democrats seek power through cheating and assassination. They are sociopaths. They just want power.)
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To: MtnClimber

It’s a pity Dr. Richard Kimble never looked up...


7 posted on 10/19/2025 2:19:19 PM PDT by null and void (The only man in all of Scotland is a 14 year old girl...)
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To: ClearCase_guy

Darn you! Darn you to heck!


8 posted on 10/19/2025 2:20:13 PM PDT by null and void (The only man in all of Scotland is a 14 year old girl...)
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To: MtnClimber
It was the one-armed galaxy!
9 posted on 10/19/2025 2:50:37 PM PDT by NavyShoe
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To: MtnClimber
FYI

The Orionid meteor shower peaks under dark, moonless skies next week. Here's how to see it
10 posted on 10/19/2025 3:07:39 PM PDT by Kid Shelleen (Beat your plowshares into swords. Let the weak say I am strong)
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To: MtnClimber
I didn’t see THAT coming, lol!

Beautiful little galaxy!

11 posted on 10/19/2025 4:43:17 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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