We can use Principle VI to deduce the nature of stars from current scientific research and what we know about the firmament, a rigid sphere made up of at least 12 layers of different crystal structures.
The main evidence for the expansion of the universe is something called redshift. Redshift is the tendency for the light of far away objects to be composed of wavelengths at the red end of the spectrum.
The Expansion of the Universe
The expansion of the universe isn't a testable hypothesis so it's not scientific. The theory is accepted because it compliments the mainstream science narrative of godless existence (SciPop).
The Hubble Constant
Sir Edwin Hubble was one of the first to suggest that the apparent red shift of stellar objects is caused by the doppler effect as the universe expands and the stars become further and further away.
Experimentation and Heliocentricity
The experimental basis for the purported proof of heliocentricity is vast. Fortunately we collected up all of the submissions to our "can you prove heliocentricity?" challenge which began December 25, 2015.
ainstream Science (SciPop) is an inductive rationalization of the premise that the universe doesn't require a divine or supernatural cause. All evidence of the supernatural has to be rationalized as something else.