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Ancient Star Catalog Unearthed: Hipparchus's Secrets Decoded

2/1/2026

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Story summary
  • Researchers at SLAC National Accelerator Laboratory recovered parts of Hipparchus's star catalog by decoding erased text in Codex Climaci Rescriptus with synchrotron technology.
  • Dating to the 5th or 6th century, the Codex Climaci Rescriptus contains star coordinates and sketches revealing Hipparchus's methods.
  • The findings may clarify debates about the origins of astronomical knowledge and the contributions of Ptolemy.
  • The project aims to uncover more hidden texts and broaden understanding.