What will happen when the CMB will raise the zero?

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When the Cosmic Microwave Background (CMB) raises the zero, it is suggested that the universe could experience a significant transformation. Penrose theorizes that as the CMB's redshift approaches zero, most mass will be concentrated in black holes, which will eventually evaporate due to Hawking radiation. This process could lead to a universe dominated by radiation, devoid of particles with rest mass. The discussion highlights the potential for a cyclical universe that begins and ends in a state of pure radiation. Ultimately, the future of the universe may result in an unstable eternity characterized by radiation alone.
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What will happen when the CMB will raise the zero?
 
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What will happen when the CMB will raise the zero?

The zero will implode.
 


Ignition said:
What will happen when the CMB will raise the zero?

One suggestion by Penrose is that by the time the redshift of the CMB approaches zero, most of the mass of universe will be locked up in numerous black holes, but because by then the radiation from black holes exceeds the energy absorbed from the CMB the black holes evaporate away to leave a universe that is all radiation, with no particles with rest mass. He likes the symmetry of a universe that starts out as all radiation and ends up as all radiation.
 


These posts are not making sense at the moment.

Are you asking: "What happens when the redshift of the CMB approaches infinity, in which case the energy of the individual CMB photons approach zero?"

In the inconceivable future the matter would end up locked in BHs that after eons of time will evaporate through Hawking radiation leaving behind an unstable eternity.

Garth
 


I like Fluxman's answer best.

Jon
 

Thread 'Matter density right after the decoupling'

https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
View full post »

Thread 'Hubble Constant, Dark Energy and the Expanding Universe'

Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?
View full post »

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