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Ancient Greek Astronomer's Sky Map Uncovered in Egypt

3/8/2026

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Story summary
  • Researchers are reconstructing what is believed to be the oldest-known map of the night sky, likely by Hipparchus, the ancient Greek astronomer, hidden in the Codex Climaci Rescriptus and revealed by X-ray scanning at SLAC.
  • The manuscript originates from St Catherine's Monastery in Egypt.
  • Historian Victor Gysembergh notes the work's significance for scientific origins, and the project aims to recover as much of the 200-page text as possible.