Elliptical vs. Cardioid

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.

Conic Sections

When we ask the question: what's at the second focus in Kepler's laws there's another stock response which comes up with surprising frequency. It appears that everyone has been trained to give this answer.

Spandex Has-beens

Has-been scientists with spandex. These are washed up university lecturers who like to impress young girls and boys with how cool they are, while promoting an untestable hypothesis like it’s real science.

Synonymy

We have to take a step back and remember that we are on popular science turf (SciPop) when we start talking in their terms about the cosmos. SciPop wants you to believe that the stars are distant suns and galaxies.

Redshift

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.

An Epidemic of Despair

Something startling is happening to middle-aged white Americans. Unlike every other age, racial and ethnic group, unlike their counterparts in other rich countries, death rates in this group have been rising, not falling.