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.
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.
Scientifically illiterate science worshipers (SISWs) frequently tout the importance of empirical evidence. They squawk the phrase "empirical evidence" like parrots squawking "pieces of eight, pieces of eight".Scientifically illiterate science worshipers (SISWs) frequently tout the importance of empirical evidence. They use the phrase like parrots squawking "pieces of eight, pieces of eight."
Asteroids have elliptical orbits which is why they approach close to the Earth. They're there ready for a time when they're doomed to crash into the Earth during the tribulation. This gives us a predictive testable hypothesis.
Most people believe that the heliocentric theory disproves Geocentrosphericity. The fact is that heliocentric and geocentrospheric are two different frames of reference in the same system. They coexist.
The inner and outer planets have elliptical orbits because they orbit the Earth-sun binary system. Binary system? That's cool, there's one of those in Star Wars, right? Tatooine? Binary sunset?
Eccentricity is due to variation in the orbital radius of the Sun, not variation in the Earth-sun radial distance. The solar orbit is helical, origin of its Greek name "Helios".
Contrary to popular opinion, the Earth doesn't have an elliptical orbit of the sun. The Earth-sun radius is, for all practical purposes, constant.
A lot of people are involved in the science vs. faith debate. This is rather ironic since what they refer to as "science" is a sad parody called mainstream science (SciPop) which requires just as much faith as any religion does.
Direct observation from Earth is that the planets appear to have elliptical orbits around the Sun. We observe this planetary system orbit the Earth every day. That means that the Earth is f1, the Sun is f2 in the elliptical orbits.