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Chankillo is the oldest surviving astronomical observatory on Earth

Summary by Curiosmos
Long before clocks, calendars, or written records of astronomy, a forgotten civilization in the Peruvian desert was already marking time with the rising sun. More than 2,300 years ago, they built something that still works today. Thirteen stone towers stretch across a low ridge at Chankillo, aligned so precisely with the solar year that the […] The post Chankillo is the oldest surviving astronomical observatory on Earth appeared first on Curiosm…
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Curiosmos broke the news in on Friday, May 9, 2025.
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