Greek Philosophers/Astronomers/Scientists

Who	When	Where	What
Thales	624-547 BC	Miletus	credited with being the “father” of philosophy theory of everything: “all is water”
Pythagoras	570-490 BC	Samos	mystical mathematics Pythagorean theorem “All is number”
Anaxagoras	499–428 B.C.	Smyrna (Izmar)	Lunar eclipses are caused by the earth between sun and moon. The sun is a red hot stone
Democritus	460 – 370 BC	Abedra	atomic theory “nothing exists but atoms and empty space – everything else is opinion”
Plato	428-348 BC	Athens	idealistic philosophy
Aristotle	384-322 BC	Macedonia	philosophy of the natural world the earth is a sphere heavens are perfect planets move on concentric spheres
Aristarchus	310-230 BC	Samos	measured distance to the moon and sun measured the sizes of the sun and moon proposed heliocentric system
Erotosthenes	276-195 BC	Alexandria	measured size of the earth
Hipparchus	190-120 BC	Nicaea	produced the most accurate star maps discovered precession
Ptolemy	100-170 AD	Alexandria	produced a geocentric model of the solar system which lasted almost 1500 years