Steven, you say:
"In Cosmology Omega is more complicated as it goes beyond the density of matter. It is composed of a visible matter component (as described above), a dark matter component and dark energy."
To cut out the mumbo jumbo, if I were to fire a bullet, I can calculate its trajectory without invoking dark matter and dark energy. Since earth and the bullet are part of the cosmos and the bullet's path can be calculated without invoking dark matter and dark energy, dark matter and dark energy are fictions.
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