Copernicus

I was very interesting reading about the findings of Copernicus.  Specifically, reading about how certain heavenly fixtures can be observed in Egypt but not Italy, conversely certain fixtures in the sky were visible in Italy and not in Egypt.  I often wondered about how the conclusion and supporting evidence was used to show that the earth was indeed a sphere and not flat.  It makes it even more remarkable that this view was certainly a minority view at this time.  To think these scientists did not have any expensive gadgets or any technology and they just relied on basic fundamentals to support their claims.  I often wonder if there are scientists today that are completely ostracized from the scientific community but possibly hundreds of years from now they will be looked upon as genius.