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+--- Thread: From Ptolemy to Copernicus - how Astronomy shaped our understanding of the stars (/thread-18138.html)
From Ptolemy to Copernicus - how Astronomy shaped our understanding of the stars - Ostronomos - Jun 5, 2025
Observations of the stars were important to ancient societies. Astrology, a system of beliefs begun by the Babylonians and later developed by the Greeks, held that our personalities were affected by planetary motion relative to the stars. Ptolemy developed one of the earliest systems of astronomy. Although now considered flawed, it was based on the primitive idea that the planets and the stars rotated around a stationary earth. It was not until Philosopher and mathematician Nicolaus Copernicus challenged the Catholic Church by proposing that the planets rotated around a stationary sun in 1543. Using mathematics unbeknownst to his predecessors. Galileo was one of the first mathematicians to build a telescope to observe the heavens. In England, it is believed that stone-henge may have been a primitive observatory. It is believed that at certain times of the year, particularly the summer solstice, that the stars align with this structure.