jc s h i have undone your edit because it presents the information falsely the previous definition was too brief in my opinion but at least it wasn't inaccurate the zodiac is an ecliptic based frame of astronomical refrence that is used to define celestial latitude and longitude what you have written above shows misunderstanding and lack of knowledge so if you want to propose an amendment based on sources it would be a good idea to discuss here first with details of the sources for verification please present a page number and not just a book so we can see why you are making the assumptions you are making it is my intention to correct the information on the zodiac page btw before worrying too much about what this page says but what is presented here should not be deliberately false or misleading talk