We need to know that some concepts are paradigm-dependent. This means that they only apply after accepting the premise of a paradigm. We've been discussing elliptical planetary orbits, that's a heliocentric concept.
Elliptical vs. Cardioid
April 12th
Despite the self-evident truth of empirical observations, science promotes a rationalization for them that has no physical cause. It is not a testable hypothesis. Science is unscientific.