And what in the hell is dark energy & dark matter?
(Aside from magic that makes calculations work)
(Aside from magic that makes calculations work)
A little off topic. Dark matter and dark energy are stuff that make observations consistent with calculations. Science is driven by observations. As early at the 1933 Swiss-American Astronomer Fritz Zwicky noticed that gravitational attraction between luminous material could not explain galactic clusters. Centrifugal force should tear them apart, but they did not seem to be coming apart. He coined the term "Dark Matter". Dark matter need not be mysterious. A lump of coal will do. Just a lot of them.
Other explanations exist, but most alternate hypothesis have been shot down by detailed observations and analysis. Dark matter, as currently most widely understood, is matter that does not interact with light - electromagnetic radiation - but does interact with gravity. (Except to the extend that photons interact with gravity.) Neutrons would be an example. There appears to be little debate about the amount and distribution of dark matter, what is not know is its nature.
Dark energy is what drives the expansion of the universe. There is much observational evidence not only that the universe is expanding, but the expansion is accelerating. Quantum mechanics predicts a certain vacuum pressure for space, but its value is several score orders of magnitude greater than what is observed.
This is not theory patching or idle speculation. We do not have a coherent theory of everything, or even a satisfactory cosmology. But if we are to arrive there, we have to start somewhere. This is the best we can do so far.
Today's real scientists recognize that the universe is electrical and that the Dark Matter is really plasma. In the same way that water vapor can be in the air but invisible but with matter there are the 4 states:solid, liquid, gaseous & plasma.
Thus the old school guys have to invent crazy motions such as Neutron stars since gravity is the only tool in their box but it's best explained in the electricity toolkit. Search on Electric Universe.
And when you inject them into an equation of regular matter, they destroy the equation itself so you have to use predictive analysis to judge how it would have come out....