So what happens if say a solar system or part of it happens to pass trough that stream. I wonder.
I believe the distances between galaxies are too vast for that to happen.
Black holes are the centres of galaxies, that’s where all the suns and planets go down the gurgler...and come out the other side as plasma/energy...probably to form huge gass-clouds that swirl into discs of matter, making new spheres we call planets.
In other words, everything I see is just like kitchen-physics. As below, so above. Round and round it all goes.