At https://www.space.com/x-ray-galaxy-cluster-gas-structure … the gas is so hot, we are told, between ten million and a hundred million degrees Celsius, that it radiates as powerful X-rays. We might guess they are talking about plasma – but on the face of it that doesn’t seem to be the case. Not only that they continue by saying the gas only makes up 15 per cent of the mass [in the galaxy cluster]. Invisible dark matter forms 80 per cent of mass. The other 5 per cent must be normal mass. While we can infer dark matter’s presence, they add, from the new process of gravitational lensing, we can’t actually see it. However, they can see the intra-cluster gas, thanks to the X-ray vista of ESAs XMM-Newton mission. They do not even mention plasma. It is ionised hydrogen gas we are told.
Now is the time to get your teeth into an alternate point of view. We have for sale on this web site Don Scott’s latest missive, ‘The Interconnected Cosmos‘
At https://www.sciencedaily.com/releases/2024/07/240724171512.htm … we have another galaxy cluster – but in the process of a collision. We are told that vast clouds of dark matter have decoupled the so called normal matter. No mention all this is a hypothesis. It comes across as a factoid. They say it as if their interpretation is spot on. It may not be. However, once established by repeating it over and over it will become so embedded actually presenting a different point of view will be almost impossible. The researchers here define normal matter as 15 per cent, most of which is very hot gas. Dark matter is 85 per cent of mass in this calculation – which they still cannot see. This one is US research but see the research paper at https://doi.org/10.3847/1538-4357/ad3fb5 …