-
276
eratosthenes
was the first person to measure the world (25000 circumference) with parellel sun rays -
Sep 18, 1500
seasons
people used stones in a circle to mark summer and winter solstices -
aristotle
the guy that found that planets move at a constant speed around small circles called epicycels -
pythagoras
greek scientist responsible for the harmony of spheres. -
stars align
aborigonal people used rocks to align with stars