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Astronomy Picture of the Day - Dark Matter in a Simulated Universe
NASA ^ | 25 Oct. 2026 | Credit & Copyright: Tom Abel & Ralf Kaehler (KIPAC , SLAC), AMNH

Posted on 10/25/2026 12:50:41 PM PDT by MtnClimber

Explanation: Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why gravitational lenses so strongly deflect light, and how visible matter is distributed. The featured image from the American Museum of Natural History's Hayden Planetarium Space Show, Dark Universe, highlights one example of how pervasive dark matter might haunt our universe. In this frame from a detailed computer simulation, complex filaments of dark matter, shown in black, are strewn about the universe like spider webs, while the relatively rare clumps of familiar baryonic matter are colored orange. These simulations are good statistical matches to astronomical observations. In what is perhaps a scarier turn of events, dark matter -- although quite strange and in an unknown form -- is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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1 posted on 10/25/2026 12:50:41 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 10/25/2026 12:51:01 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; 31R1O; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 10/25/2026 12:51:46 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

Whoa.


4 posted on 10/25/2026 12:52:02 PM PDT by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber

“ There is no dark side in the moon, really. Matter of fact, it’s all dark. The only thing that makes it look light is the sun.”


5 posted on 10/25/2026 1:02:11 PM PDT by IndispensableDestiny
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To: MtnClimber

“is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy,”

Just as I had it all figured out, they change everything!


6 posted on 10/25/2026 1:31:17 PM PDT by doorgunner69
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To: MtnClimber

“baryonic”

Just expanded my vocabulary


7 posted on 10/25/2026 1:33:34 PM PDT by doorgunner69
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To: doorgunner69; MtnClimber
“baryonic”

Sounds kind of like an unpleasant medical procedure.

8 posted on 10/25/2026 2:12:00 PM PDT by AFB-XYZ
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To: All
There’s no doubt what the highlight of the sky is this week — the rise of the Hunter’s Moon on Monday, Oct. 26. However, as its light fades from the evening sky, the stars of fall begin to shine brightly. As the moon wanes, it will pass close to the Pleiades, or “Seven Sisters,” one of the most beautiful star clusters visible to the naked eye

The ‘Hunter’s Moon’ Is About To Meet The ‘Seven Sisters’
9 posted on 10/25/2026 2:22:00 PM PDT by Kid Shelleen (Beat your plowshares into swords. Let the weak say I am strong)
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To: MtnClimber

Hmmmmm...our universe is controlled by matter we cannot interact with, and energy we cannot harness. Both of these entities haven’t been scientifically proven to exist yet. We can only use these “properties” to explain phenomena our standard understanding cannot explain. We have come a long way, haven’t we.

IMHO.


10 posted on 10/25/2026 2:30:56 PM PDT by Getready (Wisdom is more valuable than gold and harder to find.)
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To: MtnClimber

“The dark matter made me do it!”


11 posted on 10/25/2026 2:52:10 PM PDT by blueunicorn6 ("A crack shot and a good dancer” )
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To: MtnClimber

“The dark matter made me rob that store!”


12 posted on 10/25/2026 3:01:46 PM PDT by blueunicorn6 ("A crack shot and a good dancer” )
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To: blueunicorn6

“The dark matter made me take those drugs!”


13 posted on 10/25/2026 3:02:49 PM PDT by blueunicorn6 ("A crack shot and a good dancer” )
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To: MtnClimber

“The dark matter made me gamble!”


14 posted on 10/25/2026 3:03:29 PM PDT by blueunicorn6 ("A crack shot and a good dancer” )
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To: MtnClimber

These are the veins that allow interstellar space travel possible.


15 posted on 10/25/2026 3:03:29 PM PDT by redshawk ( I want my red balloon. https://youtu.be/VexKSRKoWQY)
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To: MtnClimber

Maybe that’s where God sends people into the outer darkness.


16 posted on 10/25/2026 3:13:21 PM PDT by roving
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To: IndispensableDestiny

it’s ‘mind over dark matter’ ‘if you don’t mind, the dark don’t matter’


17 posted on 10/25/2026 4:16:51 PM PDT by Bob434 (Time flies like an arrow, Fruit flies like a banana)
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To: MtnClimber
...no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe.

So there IS anti-gravity and it's being used to explain the previously unexplainable.

18 posted on 10/25/2026 6:06:27 PM PDT by MikelTackNailer (And all this science I don't understand. It's just my job five days a week.)
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To: MtnClimber

Thor’s nine realms.


19 posted on 10/25/2026 7:12:04 PM PDT by thepoodlebites (and that government of the people, by the people, for the people, shall not perish from the earth.)
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To: Getready; SunkenCiv

You noticed that too, eh?

(But, Bueller, we have advanced waaaaay past “Waves hand. It all began with One Miracle” Right?


20 posted on 10/25/2026 9:04:40 PM PDT by Robert A Cook PE (Do the racist Islamics use their Communists as dupes? Or do the racist Communists use the Islamics?)
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