Thony Christie on Nostr: printed by Regiomontanus in 1472, had less circles that Copernicus' heliocentric ...

printed by Regiomontanus in 1472, had less circles that Copernicus' heliocentric deferent/epicycle model in De revolutionibus. The first person to point this out, and the claim that Copernicus' system was simpler was a myth, was Arthur Koestler in his The Sleepwalkers in 1959. The philosopher Wilhelm Kamlah has already pointed it out in German in a paper from, I think, 1948. I have drawn attention to the myth in various blog posts.