I What Is the True Nature of Dark Matter?

AI Thread Summary
Dark matter remains an elusive concept, with various theories suggesting it could be a new particle interacting solely through gravity or a manifestation of modified gravitational laws. Observations like the bullet cluster and the cosmic microwave background power spectrum support the particle nature of dark matter, yet no consistent explanation from modified gravity models exists. Current understanding leans towards particle dark matter as the most plausible explanation, although it is not definitively proven. There is also the possibility of undiscovered particles contributing to dark matter or a fundamental misunderstanding of gravity itself. The true nature of dark matter continues to be a significant mystery in astrophysics.
SD das
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What is exactly the dark matter? There are lot's of things hitting at a particle nature of dark matter I mean observation of the bullet cluster, freeze out times in the earlier universe, the third peak in the CMB power spectrum.

I think there is no known consistent explanation by modified gravity models. On the other hand there are any different dark matter models that are able to explain all observations. Hmmm well of course this does not prove anything, but to our current knowledge particle dark matter is definitely the best guess.[emoji53]
 
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SD das said:
What is exactly the dark matter?

We don't know. It could be a new particle that only interacts through gravity, it could be that gravity behaves differently than our current laws, or it could be something else. The first possibility is currently thought to be the most probable one.
 
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Drakkith said:
We don't know. It could be a new particle that only interacts through gravity, it could be that gravity behaves differently than our current laws, or it could be something else. The first possibility is currently thought to be the most probable one.
Or it maybe that there is some as yet undiscovered particles that makes up of the dark matter, it may be that the dark matter is actually our misunderstanding of the laws of gravity, or or it maybe something else entirely that we haven't even thought of yet[emoji44]
 
SD das said:
Or it maybe that there is some as yet undiscovered particles that makes up of the dark matter, it may be that the dark matter is actually our misunderstanding of the laws of gravity, or or it maybe something else entirely that we haven't even thought of yet[emoji44]

Yes, that is exactly what I said. :biggrin:
 
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