How many atoms are in the observable universe?

Probably a very small part are atoms. Rarefied fundamental matter can not be detected, without inducing it. With the time involved......and the way stars break down and spew out fundamental matter, there's a good chance that most of the matter in the universe, and in this galaxy, is non-detectable.

In other words, most of matter is NOT atoms.

And rarefied matter(isolated charge) has no gravity and is not affected by gravity.

Remember, after one hundred years of modern theory, we can not stir plasma in a pot, or simulate multiple orbits. Neither the mass/matter theories or the space-time theories have been able to explain mass and gravity.

Our modern theories have only political institutional proof, not physical proof. They have never had physical proof.

If they were correct, we could stir plasma and simulate a solar system. Instead of finding the correct solution, they just keep adding new entities/properties to protect their theories......their careers and their reputations........but mostly for funding.

A perfect scam. They neither earn their money and they are never held accountable.

Just like virus researchers.