We live in a light-polluted world, where street lamps, electronic advertisements, and even backyard lights block out all but the brightest celestial objects in the night sky. But travel to an officially protected “Dark Sky” area, look up at the sky and be amazed.
This is the view of heaven that humans had for millennia. Premodern societies looked to the sky and created cosmography, maps of the sky that provided information for calendars and agricultural cycles. They also created cosmologies, which, in the original use of the word, were religious beliefs to explain the universe. The gods and heaven were inseparable.
The sky is orderly and cyclical in nature, so watch and record long enough and you will determine their rhythm. Many societies were able to accurately predict lunar eclipses, and some were also able to predict solar eclipses such as the one that will occur over North America on April 8, 2024.
The path of totality, where the moon will completely block the sun, will cross into Mexico on the Pacific coast before entering the United States in Texas, where I teach the history of technology and science, and will be seen as a partial solar eclipse all over the world. lands of the ancient Maya. This follows the annular solar eclipse of October 2023, when it was possible to observe the ‘ring of fire’ around the sun from many ancient Mayan ruins and parts of Texas.
A millennia ago, two such eclipses in the same area within six months would have sent Mayan astronomers, priests and rulers into a frenzy of activity. I have seen a similar madness – albeit for different reasons – here in the Dallas-Fort Worth area, where we will be on the path of totality. During this period between the two eclipses, I felt privileged to share my interest in the history of astronomy with students and the community.
Ancient astronomers
The ancient Maya were perhaps one of the greatest sky-gazing societies. As experienced mathematicians, they recorded systematic observations of the movement of the sun, planets and stars.
Based on these observations, they created a complex calendar system to regulate their world – one of the most accurate to pre-modern times.
Astronomers have carefully observed the sun and aligned monumental structures, such as pyramids, to track solstices and equinoxes. They also used these structures, as well as caves and wells, to mark the zenith days – the twice a year in the tropics where the sun is directly overhead and vertical objects cast no shadows.
Mayan scribes kept records of the astronomical observations in codices, hieroglyphic folding books made of fig bark paper. The Dresden Codex, one of four surviving ancient Mayan texts, dates to the 11th century. The pages contain a wealth of astronomical knowledge and religious interpretations and provide evidence that the Mayans could predict solar eclipses.
From the codex’s astronomical tables, researchers know that the Mayans followed the lunar nodes, the two points where the moon’s orbit intersects the ecliptic—the plane of the Earth’s orbit around the sun, which from our vantage point is the path of the Moon. the sun through our sky. They also created tables divided into the 177-day eclipse seasons, marking the days when eclipses were possible.
Heavenly battle
But why invest so much in tracking the sky?
Knowledge is power. Keeping track of what happened at the time of certain celestial events can give you advance warning and take proper precautions if cycles repeat. Priests and rulers would know how to act, what rituals to perform, and what sacrifices to make to the gods to ensure that the cycles of destruction, rebirth, and renewal continued.