Ptolemei (168 BC - 90 BC) - Geocentric conception (jan 1, 168 BC – jan 1, 90 BC)
Description:
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.
Added to timeline:
Date:
jan 1, 168 BC
jan 1, 90 BC
~ 78 years