Ptolemy's system of astronomy held up until 1543, when this Polish astronomer went heliocentric
[DOC] [TLE] Nicolaus Copernicus - Britannica.com [PAR] May 24, 2016 ... go to homepage ... Nicolaus Copernicus, Polish Mikoaj Kopernik German 
Nikolaus ... is usually called the heliocentric, or Sun-centred, systemderived ... 
of the Heavenly Orbs), did not appear in print until 1543, the year of his death.