And Mars may be the kicker for the overall length. With a 780-day synodic period, 21 periods match exactly to 16,380, or 20 cycles of 819. Venus needs seven periods to match five 819-day counts ...

Archaeologists have discovered the remains of a nearly 3,000-year-old Mayan complex in Guatemala, revealing sanctuaries, pyramids and a unique canal system that could shed further light on the ...

The tomb of a Mayan king has been discovered by Texas archaeologists in Caracol, Belize, marking the first time researchers in the ancient city have found a ruler's identifiable resting place.

GUATEMALA CITY (CNN/CNN Newsource/WKRC) - Archaeologists have uncovered a nearly 3,000-year-old Mayan complex in northern Guatemala, revealing a treasure trove of ancient structures and artifacts.

Archaeologists have unearthed the remains of a Mayan city nearly 3,000 years old in northern Guatemala, with pyramids and monuments that point to its significance as an important ceremonial site, ...

The Mayan calendar’s 819-day cycle has confounded scholars for decades, but recent research shows how it matches up to planetary cycles over a 45-year span. That’s a much broader view of the ...