The Moon, the Sun, and Planets

The idea is, back in the day was that the stars and space is unchanging. You just know that this thing is revolving around you. Of course, they didn't know every single planet that we well, they don't even really know at that time about. I think it was maybe thought of, but, oog, because how were they to try totknow, suc plan i ers,. cause otherwise they would just think it's a star?