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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
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail). 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.
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.)
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.)
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.)
To: MtnClimber
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))
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.)
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...)
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...)
To: MtnClimber
It was the one-armed galaxy!
9
posted on
10/19/2025 2:50:37 PM PDT
by
NavyShoe
To: MtnClimber
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)
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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