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Archaeoastronomy: How Researchers Test Ancient Sky Alignments
A monument pointing toward the sky is not automatically an observatory. Learn how archaeoastronomers test intention, horizon geometry, precession and chance.
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Monuments & Megaliths
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Archaeoastronomy, Ancient Skies & Monument Alignments
How did ancient builders use sunlight and stars in architecture? Explore the striking alignments at Newgrange and Chankillo, and how researchers distinguish design from coincidence.
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Newgrange and the Winter Solstice: Architecture Built for a Beam of Light
At Newgrange, winter-solstice sunrise passes through a roof-box and deep into a Neolithic chamber. This is one of archaeoastronomy's strongest cases.
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Chankillo: The Solar Calendar That Tracked an Entire Year
Thirteen towers in coastal Peru formed an artificial horizon that tracked sunrise and sunset across the year. Chankillo is one of archaeoastronomy's strongest cases.
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Giza and Orion: Real Astronomical Skill vs Pattern Matching
Ancient Egypt had real astronomy and the Giza pyramids are precisely cardinally aligned. But that is not the same as proving a ground map of Orion's Belt.
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