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Astronomy Picture of the Day - Galaxy Lenses Galaxy from Webb
NASA ^ | 21 Apr, 2025 | Image Credit: ESA/Webb, NASA & CSA, G. Mahler

Posted on 04/21/2025 12:01:50 PM PDT by MtnClimber

Explanation: Is this one galaxy or two? Although it looks like one, the answer is two. One path to this happening is when a small galaxy collides with a larger galaxy and ends up in the center. But in the featured image, something more rare is going on. Here, the central light-colored elliptical galaxy is much closer than the blue and red-colored spiral galaxy that surrounds it. This can happen when near and far galaxies are exactly aligned, causing the gravity of the near galaxy to pull the light from the far galaxy around it in an effect called gravitational lensing. The featured galaxy double was taken by the Webb Space Telescope and shows a complete Einstein ring, with great detail visible for both galaxies. Galaxy lenses like this can reveal new information about the mass distribution of the foreground lens and the light distribution of the background source.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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 04/21/2025 12:01:50 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 04/21/2025 12:02:19 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 04/21/2025 12:03:06 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

Thank you. I feel super connected to love. 👩‍🎤❤️ 🤢


4 posted on 04/21/2025 12:04:56 PM PDT by Texas Eagle ("Throw me to the wolves and I'll return leading the pack"- Donald J. Trump)
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To: MtnClimber

My sophomore year over Christmas break, a (nosy) neighbor told me over the fence she heard I had declared an astronomy major.
I told her, No, and where did she hear that.
She said my father told her I was taking up space in college.


5 posted on 04/21/2025 12:07:30 PM PDT by tumblindice (America's founding fathers: all armed conservatives)
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To: MtnClimber

Eye see you.


6 posted on 04/21/2025 12:11:38 PM PDT by Waverunner
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To: MtnClimber

Lensing....
Well I’ll be!


7 posted on 04/21/2025 12:16:49 PM PDT by Big Red Badger (ALL Things Will be Revealed !)
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To: Waverunner
Eye see you.

Alan Parsons Project song running through my head for some reason . . .

8 posted on 04/21/2025 1:05:22 PM PDT by AFB-XYZ (( We have two options: 1. Stand up, or 2. Bend over))
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To: MtnClimber

“I’m afraid I can’t do that, Dave. “


9 posted on 04/21/2025 1:09:21 PM PDT by beethovenfan (The REAL Great Reset will be when Jesus returns. )
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To: MtnClimber

Looks like an eyeball. Is that a mote in it?


10 posted on 04/21/2025 2:39:45 PM PDT by Seruzawa ("The Political left is the Garden of Eden of incompetence" - Marx the Smarter (Groucho))
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To: tumblindice

LOL!


11 posted on 04/21/2025 5:01:46 PM PDT by telescope115 (I NEED MY SPACE!!! 🔭)
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To: Seruzawa

Only Niven and Pournelle know for sure😉


12 posted on 04/21/2025 5:04:16 PM PDT by telescope115 (I NEED MY SPACE!!! 🔭)
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To: MtnClimber

Looks like it ought to be sitting between two pieces of bread next to some bacon.


13 posted on 04/21/2025 5:21:29 PM PDT by Preachin' (I stand with many voters who will never vote for a pro abortion candidate.)
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To: MtnClimber

That is called the Fried Green Egg galaxy....


14 posted on 04/22/2025 5:26:14 PM PDT by minnesota_bound (Need more money to buy everything now)
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To: minnesota_bound
Thomas L. Friedman, famous New York Times editorialist, does not much like Trump’s plan for Gaza. A skilled wordsmith, he dismisses it, writing, “How short a distance it is between out-of-the-box thinking and out-of-your-mind thinking.” However, the former is correct. This plan is creative, unique, and incisive, and kills several “boids” (as we say in Brooklyn) with one rock. For one thing, it will safeguard Israel. Under an American Riviera on the Mediterranean, there will be no more rockets launched in an eastward direction; no more leaping out of tunnels (a new tourist attraction!) to unleash suicide bombers. For another, the Palestinians have a history of trying to topple the governments who are kind enough to take them in — e.g., King Hussein. Friendly amendment coming up: If these marauders can be sent to Iran, not Egypt or Jordan, they may well do so there. Surely, there is no government that deserves to be overthrown more than the mullahs of that country. Doing so might well obviate the need for nuclear war. Third, if any people deserve some sort of punishment, loss of their homes, etc., it is these Gazans, who have overwhelmingly supported the evil depredations of that terrorist group, Hamas. But Mr. Friedman is having none of this. What is his substantive critique? Mostly, he confines himself to name-calling: “single most idiotic and dangerous Middle East ‘peace’ initiative”; only “a collection of bobblehead dolls” support this plan; “is a recipe for chaos at home and abroad”; “this juvenile Mar-a-Gaza proposal.” My, oh my. Is there anything at all of substance? Yes, a little bit: “It will destabilize the demographic balance in Jordan between East Bankers and Palestinians, destabilize Egypt, and destabilize Israel.” But if we substitute Iran for Jordan and Egypt, destabilization is all to the good! Destabilization of Israel? The very opposite is the case. No longer will the Jewish state be subject every few weeks or months to minor attacks, and every few years to major ones.

No ham?

15 posted on 04/22/2025 5:27:50 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

Sorry, my paste quoting your comment did not copy and the previous article I posted got pasted. My copy function does not seem to work at times.


16 posted on 04/22/2025 6:17:17 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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