Maybe Dark Matter Is More Than One Thing - Scientific American
( May 30, 2021; Scientific American )
The label "dark matter" encapsulates our ignorance regarding the nature of most of the matter in the universe. It contributes five times more than ordinary matter to the cosmic mass budget. But we cannot see it. We infer its existence only indirectly through its gravitational influence on visible matter.
The standard model of cosmology successfully explains the gravitational growth of present-day galaxies and their clustering as driven by primordial fluctuations in an ocean of invisible particles with initially small random motions. But this "cold dark matter" might actually be a mixture of different particles. It could be made of weakly interacting massive particles; hypothetical particles like axions; or even dark atoms that do not interact with ordinary matter or light. We have not detected any of these invisible particles yet, but we have measured the imprint of the fluctuations in their primordial spatial distribution as slight variations across the sky in the brightness of the cosmic microwave background, the relic radiation left over from the hot big bang.
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This is how the science meant for, research is not some thing where we finally comes to a conclusion but it's about discovering more and more. Here I will praise the God how HE created the human brain to explore more and more, and that's why GOD has made humans a superior creature than the other creatures.
This is really interesting fascinating and amazing to see how our universe is so giant and great with invisible magics and divine powers .
This article was worth to read
Fascinating. Every discovery in the far universe reminds me how insignificant we actually are. Much we still don't know. If we could travel fast enough to reach the end of the known universe, still it could be nothing more than a grain of sand in a far greater reality.
A very interesting topic every day we human beings understand the universe better, but how can scientists know what dark matter is composed of? since it is invisible. How do you measure electrons, protons, neutrons, and neutrinos? that in theory dark matter is composed since we have no physical proof of it. Although it can be detected indirectly through gravitational influence, as the article says in general, although it is true that in recent years great progress has been made related to dark matter and I have spoken about it in one of my publications and now with the new theory of del bing bang Study reveals new details on what happened in the first microsecond of Big Bang I'm doing a short post on this topic. I recommend you read the article that leaves you thoughtful.
These types of topics leave more questions than answers
Every day more things are discovered, and there is still much more to discover, the human does not know in wanting to discover further ...