spin wrote: Almost everyone before Aristotle's time thought the earth was flat. Certainly the gospel writers thought the earth was flat. How else can you explain one being able to see all the kingdoms of the world from the top of a high mountain (Mt 4:8)?
The threat of Turkish military dominance over Constantinople, in the middle of the fifteenth Century CE, led to emigration of many Greeks to Italy.
They brought with them, copies of the Greek masterworks, including now lost texts by Aristarchus and Eratosthenes, two Greeks, both of whom had lived in Alexandria, and both of whom had been employed as Head Librarian in the world's greatest library of that era. Did they concoct their original ideas from preexisting manuscripts in that wonderful library? Why not?
Aristarchus lived 50 years after Aristotle, half a millenium before Matthew. Aristarchus accurately placed the planets in their proper position, and appropriate relative distance from the sun, located in the center of the solar system. His investigation, refuting both Plato and Aristotle, had been ignored by nearly everyone, not just Christians and Jews. It had not been overlooked by his successor as chief librarian in Alexandria: Eratosthenes, who computed, relatively accurately, the circumference of the earth, by means of optics, following in the footsteps of Aristarchus' similar use of geometry and optics to derive heliocentrism.
Thus, contrary to the implication of your post, spin, Greek intellectuals did know about, and explain both heliocentrism, and the distance involved, circumnavigating the planet, long before, centuries before, Matthew. In my opinion, it was the work of these two authors, Aristarchus and Eratosthenes, that inspired two other Europeans, in the latter part of the fifteenth century, both of them, studying in Italy, both encountering these Greek manuscripts, brought to Italy from Constantinople at the time of the fall of that great city, into Turkish, Muslim hands: Copernicus, ostensibly studying medicine in 1499, and Christopher Columbus, in the late 1480's.
Fearing Christian retaliation, Copernicus deleted the reference he had made to Aristarchus' accomplishments, in his revised manuscript, the one he ultimately published in Latin, and the one read by Galileo, a century later. In his defense, we ought to remember that according to Hernando Pulgar, writing a decade before Copernicus, the Inquisition had claimed more than 2000 lives, lost by burning at the stake, for commission of heresy. One of my heroes, Girolamo Savonarola, had been executed by burning at the stake, just a decade earlier. Copernicus had good reason to fear the clerical authorities,--his deletion of Aristarchus' role in elaborating heliocentrism, despite Copernicus' literal copying of Aristarchus' diagrams, acting as though he himself had conducted the investigations, was prudent under the circumstances.
I am not going to be surprised if it turns out that a large fraction of citizens here in USA, still believe in a flat earth. Something like 70% of the population believes Jesus was a real person, who had conversed with Paul, enroute to Damascus.