CNET: World’s Oldest Known Map of Stars Found Hiding in Medieval Manuscript

CNET: World’s Oldest Known Map of Stars Found Hiding in Medieval Manuscript. “More than 2,100 years ago, Greek astronomer Hipparchus mapped out the stars — and for a long time, this had been considered humanity’s earliest attempt to assign numerical coordinates to stellar bodies. But despite its fame, the treatise was only known to exist through writings of another well-known astronomer named Claudius Ptolemy, who compiled his own celestial inventory some 400 years later. Until now, that is.”

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