"Zhao compares this dark fluid to Earth's atmosphere. Atmospheric pressure causes air to expand, but part of the air can collapse to form clouds.",

First when I read that 'dark fluid' phrase, my instant thought was that soon we would be back to the Turtle crawling across the sky, haha, but later it says fluid-like dark matter which sounds much more sensible than "A new theory says that dark matter and dark energy could arise from a single dark fluid that permeates the whole universe." because that dark fluid I can't see might as while be that fleet turtle I can't see. Well I find it amusing as fluid-like is a action property whereas a dark fluid is an substance property.
Well now that I hav...

"Zhao compares this dark fluid to Earth's atmosphere. Atmospheric pressure causes air to expand, but part of the air can collapse to form clouds.",

First when I read that 'dark fluid' phrase, my instant thought was that soon we would be back to the Turtle crawling across the sky, haha, but later it says fluid-like dark matter which sounds much more sensible than "A new theory says that dark matter and dark energy could arise from a single dark fluid that permeates the whole universe." because that dark fluid I can't see might as while be that fleet turtle I can't see. Well I find it amusing as fluid-like is a action property whereas a dark fluid is an substance property.
Well now that I have 'explained' this, I feel that I have dug a deeper dark hole than I started with, especially since dark fluid is the preferred term of the writer but not one scientist is quoted actually using either term.
What I quoted above about the clouds is because II was struck by the fact that I had no idea air collapsing created clouds and I don't think that is the case.
The whole sentence doesn't make sense. From Wikipedia, " The water in a typical cloud can have a mass of up to several million tonnes. The volume of a cloud is correspondingly high and the net density of the relatively warm air holding the droplets is low enough that air currents below and within the cloud are capable of keeping it suspended." So we have the rain drops within an area of not collapsed air but expanded air and supported by the up drafts. Atmospheric pressure cannot cause air to expand any more than water pressure can cause water to expand. Pressure by definition means forced to move or forced to condense.
Anyway Thisname, your cloud above popped into existence as I was trying to write all this and startled me into needing to be "etherized' perhaps.

I sort of visualised it like this. I imagined a drop of oil, representing the "ether" and mixed that with some tiny specks of ground pepper, representing the galaxies. Now drop that drop of oil on the surface of a pond, representing the vacuum. The oil will disperse and the pepper (galaxies) caught in it, will be carried along with it. (repr. expanding universe, dark energy) The viscosity or drag of the oil (ether) will though, keep them relatively "stuck" or enclosed in the oil "locally" (repr. the dark matter properties within the galaxies). The oil, the ether, can that way be seem to have both repelling, as well as locally attractive properties. I dunno. I have absolutely no idea what I...

I sort of visualised it like this. I imagined a drop of oil, representing the "ether" and mixed that with some tiny specks of ground pepper, representing the galaxies. Now drop that drop of oil on the surface of a pond, representing the vacuum. The oil will disperse and the pepper (galaxies) caught in it, will be carried along with it. (repr. expanding universe, dark energy) The viscosity or drag of the oil (ether) will though, keep them relatively "stuck" or enclosed in the oil "locally" (repr. the dark matter properties within the galaxies). The oil, the ether, can that way be seem to have both repelling, as well as locally attractive properties. I dunno. I have absolutely no idea what I am talking about. *LOL* I'm just trying to visualise the concept.

Dark matter is probably just very little. They created Dark matter so their calculations would work, and all of the calculations are based on theories that may never be proved in these four dimensions. Why are things speeding up? As they get further apart maybe there is less holding them back, and thehave the same energy, but less size with respect to the rest of the universe. Newton and Einstein took great steps, but there is clearly more to it, and for us to have a clue, the whole concept of cosmic generation, will have to be reformatted. For instance Proton will repel proton, and electron will repel electron, and they aren't dark-Just hard to see. With Neutrons having the mass to bind. If...

Dark matter is probably just very little. They created Dark matter so their calculations would work, and all of the calculations are based on theories that may never be proved in these four dimensions. Why are things speeding up? As they get further apart maybe there is less holding them back, and thehave the same energy, but less size with respect to the rest of the universe. Newton and Einstein took great steps, but there is clearly more to it, and for us to have a clue, the whole concept of cosmic generation, will have to be reformatted. For instance Proton will repel proton, and electron will repel electron, and they aren't dark-Just hard to see. With Neutrons having the mass to bind. If an atom lost it's neutrons, it would fly apart.(Of course that's only a theory)