This 2nd century astronomer's theories were the standard for 1,400 years
[DOC] [TLE] Greek AStronomy - UBC Physics & Astronomy [PAR] Over a thousand years before Greek astronomy began, the Babylonians already 
had extensive astronomical ... By the time Ptolemy produced his Almagest in the 
2nd century ... atoms, were largely ignored because they did not fit the standard 
model