mzungu
INVICTUS
Could this explain the spontaneous appearance of matter and antimater particles that constantly happens in this universe? After all Dark matter must be also a transformation of energy, is it not? Has it reverted back to a pure energy state? It obviously has left like you say its imprint in the CMB.Hehe, well, they don't really matterThe super-massive black holes make up typically less than 2% of the mass of the stars in the galaxy, and the stars alone are already a pretty small percentage of the total mass of any given galaxy.
I'm also not so sure that they are the binding force that allows galaxies to form. I'm pretty sure that galaxies tend to form wherever you have a sufficiently large clump of dark matter, and supermassive black holes are a natural consequence of the way that gas clouds fall into the potential well provided by said dark matter.
Finally, our strongest evidence for dark matter, in my opinion, stems from the cosmic microwave background, which was emitted before any galaxies ever formed. Basically, before the CMB was emitted, normal matter, which interacts with photons, experienced pressure. So when it fell into a potential well, it would bounce due to that pressure. Dark matter simply fell in, with no pressure to bounce it back out. This leads to very different-looking sound waves for the two sorts of matter in the early universe, and we see the imprint of those sound waves on the CMB. This gives us our most sensitive way of measuring the ratio between dark matter and normal matter, and pretty conclusively rules out nearly all alternative theories for dark matter.
Could it have appeared or caused a big bang in another parallel universe?
I know that my questions sound very philosophical and that there are many unknowns but even a philosophical question may point to the right direction sometimes?
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