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The Ancients

Horizontales
The oldest of all sciences, its origins dating back several thousand years. Its meaning stems from the two Greek works, "astron" meaning 'star' and and "nomos" meaning 'law'.
An 18 year period of time used by the Greeks to predict a sequence of solar and lunar eclipses. Also known to the Babylonians and Chaldeans.
From Samos and lived between 320 and 240 BC, he produced the first and most famous Heliocentric theory which put the Sun and not the Earth at the center of the Solar System.
A megalithic site in England use for predicting the annual change of seasons.
A megalithic site in France use for predicting the annual change of seasons.
Verticales
From Miletus (624-547 BC), he ended a war between the Medes and the Lydians by predicting a solar eclipse on 28 May 585 BC
A Greek philosopher who incorrectly theorized the Earth was the center of the sky, that the Heavens and sky were perfect and followed a perfect curve. He systemically set astronomy back over 2000 years.
A Greek astronomer from 500 to 428 BC who correctly explained the cause of the solar and lunar eclipses and considered the moon to be illuminated by reflected light.
A Greek astronomer from 610-546BC and a student of Thales who brought the knowledge of the ancient Egyptians to Greece and introduced the sundial as a time-keeping device
This first practical application of astronomy. They were used for predictions of natural phenomena.