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A new study shows the ancient Dresden Codex held calculations could forecast eclipses centuries ahead. Maya daykeepers used overlapping 223- or 358-month cycles to maintain precise lunar and solar ...

Page 9 and Page 8 of Códice Maya de México (c. 1100) (all images courtesy Biblioteca Nacional de Antropología e Historia, Secretaría de Cultura-INAH-México; all ...

The Grolier Codex helped ancient Mayans track astronomical phenomena. As the Mayan civilization was in decline, a diligent scribe was working on the oldest book created in the Americas: the Grolier ...

An ancient Mayan document long thought to be a forgery was recently found to be genuine. The text, known as the Grolier Codex, was analyzed by researchers from Yale, Brown, and the University of ...

A bark-paper document with a weird backstory and once suspected to be a forgery is the real deal, researchers say. If true, that increases the likelihood that the plaster-coated book covered with ...

To the modern stargazer, the planet Venus is just another point of light in the night sky. But for the ancient Maya, the brilliant light of Venus was an omen of war that guided ritual activity, ...

Scholars of pre-Columbian history have been trying to decipher something called the Grolier Codex ever since it was discovered by looters in a Chiapas cave back in the '60s. It's a 13th-century ...

900-year-old astronomy guide is oldest known book written in the Americas. In a rare reversal, archaeologists have determined that a Maya book written almost 900 years ago is genuine—after decades of ...

As the Mayan civilization was in decline, a diligent scribe was working on the oldest book created in the Americas: the Grolier Codex. The book, which contains personified images of the sun, death, ...