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7000 BCE
6500 BCE
6000 BCE
5500 BCE
5000 BCE
4500 BCE
4000 BCE
3500 BCE
3000 BCE
2500 BCE
2000 BCE
1500 BCE
1000 BCE
500 BCE
0 CE
7000 BCE - 600 BCE: Astronomy developed by Indus Valley Civilization, Mesopotamians, and Egyptians.
585 BCE: Time in which Thales of Miletus lived.
585 BCE: A battle between Media and Lydia broke off immediately as a result of a total eclipse of the sun and the two armies made peace. The eclipse was successfully predicted by Thales of Miletus.
571 BCE - 497 BCE: Life of Pythagoras of Samos; claim that "number" is the First Cause of existence and the soul is immortal.
384 BCE - 322 BCE: Life of Aristotle.
310 BCE - 230 BCE: Life of Greek astronomer and mathematician Aristarchus of Samos.
276 BCE - 195 BCE: Life of Eratosthenes, ancient Greek Alexandrian scholar, native of Cyrene and one of the greatest geographers in antiquity.
190 BCE - 120 BCE: Life of Hipparchus of Nicea, the ancient Greek mathematician, astronomer and geographer considered the greatest astronomer of antiquity and among the most impressive in world history
100 CE - 170 CE: Astronomer Ptolemy lived, author of the Almagest.
100 CE: The mathematician and astronomer Menelaus of Alexandria lived.