Earth Circumference Measurement by Posidonius
Michael Lahanas
Poseidonios or Posidonius of Syria ( Ποσειδώνιος ο Απαμεύς )
Griechische Astronomie: Die Messung des Erdumfangs nach Posidonius
A demonstration of the amazing progress of Astronomy, Astrophysics and Cosmology in the last decades
Ancient Greece
Medieval Greece / Byzantine Empire
Modern Greece