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Astronomy Picture of the Day- Government shutdown so no APOD Today. I will dig up some of my favorites - The Horsehead Nebula (by request)
NASA ^ | 31 Dec, 2013 | Image Credit & Copyright: John Chumack

Posted on 10/04/2025 11:35:39 AM PDT by MtnClimber

Explanation: The Horsehead Nebula is one of the most famous nebulae on the sky. It is visible as the dark indentation to the red emission nebula in the center of the above photograph. The horse-head feature is dark because it is really an opaque dust cloud that lies in front of the bright red emission nebula. Like clouds in Earth's atmosphere, this cosmic cloud has assumed a recognizable shape by chance. After many thousands of years, the internal motions of the cloud will alter its appearance. The emission nebula's red color is caused by electrons recombining with protons to form hydrogen atoms. Also visible at the bottom left of the picture is a greenish reflection nebulae that preferentially reflects the blue light from nearby stars.


TOPICS: Astronomy; Science
KEYWORDS: apod; nasa; saddledscience
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.

1 posted on 10/04/2025 11:35:39 AM PDT by MtnClimber
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To: MtnClimber

2 posted on 10/04/2025 11:36:01 AM 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 10/04/2025 11:37:20 AM 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

No Sombrero to Display ?

.
This is a Difficult time!
/$


4 posted on 10/04/2025 11:39:13 AM PDT by Big Red Badger (ALL Things Will be Revealed !)
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To: MtnClimber

During the government shutdown I will not be posting NASA “muslim outreach” photos nor “Chinese outreach” photos. There will be no need for me to hold my nose and post that garbage.


5 posted on 10/04/2025 11:40:19 AM 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: Big Red Badger

I can post the Sombrero Galaxy tomorrow if you like.


6 posted on 10/04/2025 11:42:13 AM 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

Thank you.


7 posted on 10/04/2025 11:42:20 AM PDT by NeverTyranny
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To: Big Red Badger
Here ya go....M104


8 posted on 10/04/2025 11:52:15 AM PDT by xp38
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To: xp38

FReeps Always ahead of Schedule and
Under Budget!


9 posted on 10/04/2025 12:29:06 PM PDT by Big Red Badger (ALL Things Will be Revealed !)
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To: MtnClimber

It’s part of a gigantic chess game. 🐱‍🚀


10 posted on 10/04/2025 1:11:25 PM PDT by SunkenCiv (NeverTrumpin' -- it's not just for DNC shills anymore -- oh, wait, yeah it is.)
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To: xp38

Sombrero Galaxy is.............yes...............wait for it............... Raaaaaacist!

In order to be “fair” and “equitable” Let’s ask Ocrazio-Cortex just which drink she made as a bartender that most closely resembles galaxy M104.


11 posted on 10/04/2025 1:32:59 PM PDT by Ronaldus Magnus III (Do, or do not, there is no try )
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To: MtnClimber

Always a favorite!


12 posted on 10/04/2025 3:21:58 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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To: Ronaldus Magnus III

“Sombrero Galaxy is.............yes...............wait for it............... Raaaaaacist!”

Actually A Sombrero is very a intelligent and practical form of protection from the hot sun in the southwest. It is a sun umbrella that keeps your whole body in the shade during midday. It is a genius invention and something to be proud of.


13 posted on 10/04/2025 4:10:02 PM PDT by Openurmind (AI - An Illusion for Aptitude Intrusion to Alter Intellect. )
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To: Openurmind

The White Supremacist Galaxy is the one to watch out for. :)


14 posted on 10/04/2025 4:18:09 PM PDT by xp38
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To: MtnClimber
Thank you.

SpyNavy

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)

LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

15 posted on 10/04/2025 5:42:45 PM PDT by LonePalm (Commander and Chef)
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