Ptolemei (168 BC - 90 BC) - Geocentric conception (1 gen 168 anni a. C. – 1 gen 90 anni a. C.)
Descrizione:
He developed a theory that explains the planets motion in the sky, based on the geocentric conception (Earth is in the center of the universe, and everything else revolves around it)note: there is no exact date in the course.
Aggiunto al nastro di tempo:
Data:
1 gen 168 anni a. C.
1 gen 90 anni a. C.
~ 78 years