How much of the universe is dark matter?

[Admin]

There simply isn't enough normal matter to account for the amount of gravitational force needed to hold the universe together, meaning dark matter must be prevalent.

How much of the universe is dark matter? : Read more

 

[rod]

Another report that raises questions for me like when and how did the BB create DM? Computer simulations are good, but I think must be carefully balanced. The wrong amount of DM appearing after the BB event, the universe does not evolve like what we see today, said to take about 13.8 billion years. This holds true for various aspects of the Standard Model, dark energy, and problems like the cosmological constant. While DM is said to be seen in galaxies (generally with low redshifts), that observation does not explain when DM appears in the expanding universe or how DM managed to form just right for the expansion to avoid a collapse of the expanding universe (too much DM). Perhaps more fine-tuning problems are here.

I ask like questions in other space.com reports too about BB cosmology.

Neutrons: Facts about the influential subatomic particles

Neutral particles lurking in atomic nuclei, neutrons are responsible for nuclear reactions and for creating precious elements. Neutrons: Facts about the influential subatomic particles : Read more

forums.space.com

Something is wrong with Einstein's theory of gravity

Albert Einstein's theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales. Something is wrong with Einstein's theory of gravity : Read more

forums.space.com

 

[rod]

What is dark energy? | Space.com Forums

Another interesting report with posts asking questions. DE could be a fine-tuning problem as well in the BB model. Somehow, nature popped up all right and ready, so the expanding universe did not destroy itself at the start

 

[DrRaviSharma]

DM is everywhere including where there is no visible or EM sensible matter. But as I am writing a paper on how DM creates Matter-energy in the form of nucleus and Atoms, if at intermediate to that nucleus forming stage, if we measure gravity, we will find some even where there is no matter so that is why we are able to feel its gravitational effects.
Thanks.
Ravi
(Dr. Ravi Sharma, Ph.D. USA)
NASA Apollo Achievement Award
Chair, Ontology Summit 2022
Particle and Space Physics
Senior Enterprise Architect