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6 Sep 2017
(35000BC) Bones were found in Europe and Africa dating back to 35,000 B.C. that have moon phases engraved on them.
(8000BC) The Warren Field calendar. The oldest calendar was used.
(4900BC) The Goseck circle. the oldest sun observatory was used.
(4800BC) Nabta Playa construction, used by the Egyptians, marked summer solstice sunrise.
(3600BC) Mnajdra construction. Marked vernal and atumnal equinoxes, and the sumer solstice.
(3340BC) Earliest recorded solar eclpse
(3100BC) Stonehenge was constructed. Marks the summer solstice sunrise and the winter solstice sunset.
(1450BC) Egyptians begin to use the sundial.
(800BC) Yajnavalkya proposes that the solar system is heliocentric. This is the oldest heliocentric model.
(467BC) Anaxagoras produces a correct explanation for eclipses and why the moon shines.
(450BC) Anaxagoras proposes stars are suns just like ours.
(388BC) Ptolemy founds a school, It promotes the idea that everything in the universe moves in harmony and that the Sun, Moon, and planets move around Earth in perfect circles.
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