No, no. That can't be "medved's" pet theory.
"medved's" pet theory is that pets are psychic, and can tell what their masters are thinking!
His "Earth orbiting Saturn" is just one of his "regular" theories.....
;-)
I suppose he is following the lead of evolutionists who group fossils according to common factors and determine ancestry from the same.
Saturn's equator is tilted relative to its orbit by 27 degrees, very similar to the 23-degree tilt of the Earth. As Saturn moves along its orbit, first one hemisphere, then the other is tilted towards the Sun. This cyclical change causes seasons on Saturn, just as the changing orientation of Earth's tilt causes seasons on our planet. The first image in this sequence, on the lower left, was taken soon after the autumnal equinox in Saturn's Northern Hemisphere (which is the same as the spring equinox in its Southern Hemisphere).