Are Most Galaxies on Collision Courses Despite Dark Energy's Influence?

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Most galaxies are indeed moving away from each other due to dark energy, but within galactic clusters, some galaxies, like the Milky Way and Andromeda, may be on collision courses. The Local Group, which includes these galaxies, exhibits modest relative motion among its members. While the majority of galaxies are receding, the dynamics within clusters can lead to potential collisions. The exact number of galaxies on a collision course remains uncertain. Understanding these interactions is crucial for grasping the complex behavior of galaxies in the universe.
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How many other galaxies, have a similar trajectory of being on a crash course path with a neighboring galaxy. Is it a consensus that most galaxies are moving away from one another due to dark energy, if so is there a ball park figure of those like the Milky Way and Andromeda?
 
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Most galactic CLUSTERS are moving away from each other. Within clusters, such as our Local Group, galaxies have some modest relative motion and various of them may be on a collision course with each other. I have no idea how many.
 
Thank you, I forgot the other variable that we are in a galactic cluster!
 
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##.
The formal paper is here. The Rutgers University news has published a story about an image being closely examined at their New Brunswick campus. Here is an excerpt: Computer modeling of the gravitational lens by Keeton and Eid showed that the four visible foreground galaxies causing the gravitational bending couldn’t explain the details of the five-image pattern. Only with the addition of a large, invisible mass, in this case, a dark matter halo, could the model match the observations...
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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