A simple illustration showing the basic elements of Ptolemaic astronomy. It shows a planet rotating on an epicycle which is itself rotating around a deferent inside a crystalline sphere. The center of the system is marked with an X, and the earth is slightly off of the center. Opposite the earth is the equant point, which is what the planetary deferent would actually rotate around. Distances have been exaggerated as has the simplicity for the purposes of illustration.
U nekim državama to nije pravno moguće; ako je tako: Fastfission daje svima prava da koriste ovo djelo za bilo koju svrhu, bez ikakvih uvjeta, osim ako takvi uvjeti nisu propisani zakonom.
If you want to credit someone, credit "Wikimedia Commons." Otherwise don't credit anyone, that's fine by me. --Fastfission 15:02, 14 April 2008 (UTC)
Opisi
Dodajte kratko objašnjenje što predstavlja ova datoteka