B Is Everything outside the local group moving away from us?

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Not everything outside the local group is moving away from us; some galaxies are actually approaching. Specifically, M86 is confirmed to be moving towards us, and there is uncertainty about M81's movement. The general trend in the universe is expansion, but local gravitational interactions can lead to exceptions. Understanding these dynamics requires a grasp of complex astrophysical concepts. Overall, while most galaxies are receding, certain ones, like M86, are not.
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This is a simple question but i keep finding conflicting answers and don't understand scientific and mathamatical language well enough to consult reliable data.. 'Cause I'm a dunce.

So, is EVERYTHING outside the local group leaving us, or are some things in the virgo supercluster contracting? For example, is M81 coming or going?
 
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unwillingly ignorant said:
So, is EVERYTHING outside the local group leaving us

No. M86 is not. I believe M81 is not as well, but I am certain about M86.
 
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Ok, cool, thanks.
 
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##.
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?
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