
From Phil Plait
What we have here is a comparison of the sizes of the sun as seen at aphelion and perihelion, the two places where the sun is nearest and furthest from the earth. It simply demonstrates that the sun does not revolve around the earth in a circle.
Copernicus and Galileo believed, as did 99.9% of all philosophers before them, that orbits were perfect circles. They believed they represented perfection because they were God's or Gods' orbits. Kepler, using Tycho de Brahe's measurements GUESSED they were ellipses. Newton based all his THEORIES on ellipses and others called them LAWS proving heliocentrism.
Along came God's astronomer Domenico Cassini and measured the size of the sun every DAY for a year. Thus he was able to show the TRUE orbit of the sun and it is not an ellipse but a Cassinian oval. This in turn turned out to be related to Phi, also called the ‘Perfect’ or ‘Divine Proportions’ found is the shapes of leaves, shells, electromagnetic effects and even blood cells.
Oh, just noticed the bottom attached heliocentric website. Note he tells all the earth orbits in an ellipse. Based on that it goes on with the rest of their heliocentric propaganda.