Mapping the Sky: Celestial Coordinates from the Babylonians to Ptolemy

DO Feature Speaker: Professor Francesca Schironi, U-M Classical Studies Modern astronomers find the positions of celestial bodies in the sky using coordinate systems, that uniquely identify the position of a celestial object (a planet, a star, a galaxy) through a pair of easily measurable angles. Now a common tool in modern science, such coordinate systems...

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