No, I'm not accepting anything "without even thinking about it". I'm merely disputing that the Fathers or Church "taught" (as you keep saying) anything about flat earth. All we have is the Church's condemnation of heliocentrism. Everything else are opinions. I'll keep looking at the scientific data, but there's no evidence whatsoever that the Fathers or the Church taught flat earth.
Just because they didn't call it "flat earth", doesn't mean they didn't teach it. Cosmas Indiocopleustes' book "Christian Topography" written in 550 AD shows that there was a full blown argument between pagans and the Catholics on the subject. The book shows the monk Cosmas arguing on behalf of the flat earth against the ridiculous notions of the pagans' moving spheres. That alone tells us what former generations believed. As shown in statements throughout this and other threads, other Fathers also describe the earth to be a circuмscribed collection of land standing in the midst of the seas above which is a dome. And above the celestial dome is more water. And under the dome the sun, moon and stars revolve. That earth is like a two story house, with heaven the future realm, above us, as Cosmas, Severian and Methodius taught, all based on Moses' account, which is based on scripture. And that hell is under the earth. The Fathers also denied earth was a globe as St. John Chrysostom and St. Jerome and others make arguments against it. Even Protestant historians support all this, chronicled by Andrew Dickenson White in his famous book, "A History of the Warfare of Science with Theology in Christendom."
By the time Galileo came around, the argument had taken a decidedly scientific turn and the Church stepped in to say that heliocentrism was at odds with scripture, but only addressed the movements of earth and sun. Like I said before, this doesn't necessarily mean earth is a globe because the flatness was not in question per se, but rather, the movements of earth and stationary sun. Though the information from Christendom is admittedly scarce, probably due to preconceived notions and language difficulties, there is a point at which science and mathematics assist in recognizing the impossibility that earth is a globe. The Church being totally reasonable, does not contradict Scripture or reason, naturally, which is why She condemned heliocentrism. By the same argument, familiarity with scripture proves it is a flat earth book, something lost on the casual observer. Further, because heliocentrism is admittedly promoted by Pythagoras and Copernicus and all pagans, namely, earth is a moving sphere, and that modern science and Freemasonic NASA have gone to great lengths to keep the Copernican spheres in the minds of men, it also follows that the entire pagan model is at odds with truth. My intentions here are to seek other Catholics interested in peeling back the layers of this onion, not to be controversial for the sake of being controversial. I don't mind questions or challenges, I'm learning too.