By Keith Weiner – Re-Blogged From Gold Eagle
Explaining a new paradigm can be both simple and impossible at the same time. For example, Copernicus taught that the other planets and Sun do not revolve around the Earth. He said that all the planets revolve around the Sun, including Earth. It isn’t hard to say, and it isn’t especially hard to grasp.
Indeed, one of its virtues was making the universe simpler. In the old geocentric model, there is the phenomenon of so called retrograde motion—the planets appear to stop moving forward in their orbits, and move backwards temporarily. It’s difficult to describe mathematically, and worse, no one could explain the cause.