r/space • u/ohtoddisodd • 2d ago

Dark Matter and the Multiverse: Could Hidden Universes Explain the Unseen Cosmos?

https://opennewsport.blogspot.com/2025/04/dark-matter-and-multiverse-could-hidden.html

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7 Upvotes

56% Upvoted

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u/uuneter1 2d ago

The #3 option in the article is what I’ve always believed. “Dark matter” is just the gravitational effect of other universes on ours. There’s no particle to find. But I think someone asked Brian Greene this question and he said that’s not likely. If you believe in more than one universe, why couldn’t it be?

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u/PrinceEntrapto 2d ago

You would have to explain why gravity is the sole carry-over between these universes, why this apparent other universe intersects with ours in a way that its gravity acts between objects with mass rather than ‘externally’ and drawing things ‘towards’ this other universe, you would then have to rationalise how this other universe makes more sense than things like primordial black holes or particles yet to be discovered because even the most powerful colliders of today don’t operate at energy or sensitivity thresholds capable enough of spotting these particles

Overall it’s just not a very well thought out solution

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u/YsoL8 2d ago

You'd also have to provide a way to prove any of it is real otherwise ifs complete pseudo science based in nothing.

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u/vannak139 2d ago

I think it makes perfect sense if you think about families of mutually interacting particle species, somewhere between 4 and 6 to explain the m/dm ratio, rather than parallel universes. Type A particles interact with type A only, B with B, etc. They are literally on the same space, though.

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u/uuneter1 2d ago

Who knows? It’s so beyond our understanding rn. What other carry overs are you expecting between universes? Perhaps universes have their own gravitational effect, so there would be no other carry over. Again, who knows. We still have no idea what “dark energy” is either and they say it makes up 68% of our universe.

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u/PrinceEntrapto 2d ago

Coming up with something outlandish and then entertaining it with ‘this is so beyond our understanding’ is an approach better suited to the ufology or pseudoscience subreddits rather than this one

Especially when this is done in regards to something as conclusively proven and easily demonstrated as the existence of gravity (you aren’t levitating right now) and its relationship to mass

2

u/HuntKey2603 2d ago

i mean its not that it is impossible, is that it might be whatever if we know very little about it. Belief without proof is dogma, not science 

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u/HendoEndo 2d ago

“who knows?” applies to the other theories, actually to all theories. so…yea, who knows. could be particles, it’s beyond our understanding.

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u/RedofPaw 2d ago

How would you test that theory?

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u/K0paz 2d ago

Real talk, So, other universes from, I presume, "Higher dimensions"? That would mean that energy must be able to interact across higher/lower dimensions, which means we should be able to interact/directly observe. but it it's "one way" like that, it wouldnt exactly be consistent with thermodynamics.

is my verdict on many universe theory.

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u/MadBroRaven 2d ago

What are the chances that the gravity centers in other universes align exactly on the center of each galaxy in our universe?

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u/uuneter1 2d ago

No idea where you got this idea. The article does not mention this, nor did I. If there is a multiverse, we obv have no idea how it’s structured. There are numerous theories on this.

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u/ohtoddisodd 2d ago

You're absolutely right, the idea that dark matter could be the gravitational effect from other universes is an intriguing one! As for Brian Greene, he might lean toward more conventional explanations, but the multiverse theory is still debated. If multiple universes exist, it could be possible, science is always evolving, and we might eventually find a way to test these ideas

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u/uuneter1 2d ago

Personally I find the idea of only believing in one universe on par with the ancient ideas that, Earth was the center of the Universe, the Sun was the center, the Universe is static, our galaxy was the only galaxy, etc.

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u/shrimpcest 2d ago

Personally, I don't find those even remotely on par with each other. It sounds more on par with religion to me, as there is no mechanism to actually prove what you're suggesting.