Ben Turner is a U.K. based staff writer at Live Science. He covers physics and astronomy, among other topics like tech and climate change. He graduated from University College London with a degree in particle physics before training as a journalist. When he's not writing, Ben enjoys reading literature, playing the guitar and embarrassing himself with chess.
The map segment, which was found beneath the text on a sheet of medieval parchment, is thought to be part of the long-lost star catalog of the second century B.C. Greek astronomer Hipparchus, who made the earliest known attempt to chart the entire night sky. The fragment was concealed beneath nine leaves, or folios, of the religious Codex Climaci Rescriptus at St. Catherine's Monastery in Egypt's Sinai Peninsula.
Historically referred to as the"father of scientific astronomy," Hipparchus spent much of his later years making astronomical observations from the island of Rhodes.
Hipparchus went on to catalog roughly 850 stars across the night sky, noting their precise locations and brightnesses. By comparing his complete star chart with more fragmentary measurements of individual stars taken by past astronomers, Hipparchus realized that the distant stars had appeared to move 2 degrees from their original positions.
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