Astrologers and astronomers.
Astrologers and Scientists (especially studying physics) look at the stars
Astrologers look at stars and predict events according to what they see. They are different from astronomers because astronomers have a scientific basis, while astronomers do not.
Astrologers are those who predict fortunes based on the stars. It is the role of astrologers to interpret the positions and movements of celestial bodies, such as planets and stars, in order to predict events and provide insight into a person's life, personality, and future.
Navigators began using the astrolabe for navigation in the early 15th century. It was a key tool for determining latitude by measuring the angle between the horizon and the stars.
As astrologers, they were wittingly or unwittingly led by what appeared to them as a moving "star."
A quadrant was (and still is) an instrument that is used to measure angles up to 90°. It was first used by Ptolemy, the Greco-Roman mathematician, astronomer, geographer and astrologer. He introduced the quadrant as a better kind astrolabe and instrument used by astrologers and navigators locating and predicting the positions of the stars, determining local time and local latitude and for surveying and triangulation.
The stars or a sextant or GPS or radar or sonar ( underwater)
The astrologers mapped the stars and made observations of their movements. This aided astronomers because it gave them a framework to make further observations. The constellations developed by astrologers are still used today, even in scientific papers.In the related source link below, you can find a fuller history of astrology.
he made a school to train European navigators.
It was the Romans who observed the heavens and named the 'moving stars' they observed after their Gods and Goddesses, it became the habit of early astrologers to do the same.
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