
Almost 7,500 years ago, around the year 5446 BCE by modern calendars, a star exploded, sending incredibly bright light out into space. The light from that supernova reached Earth on July 4, 1054. Chinese astronomers recorded a bright new star that suddenly appeared in the sky. It was so bright that it was visible both day and night for months.
Halfway around the world, Chaco was near the height of its power, a ceremonial and administrative city and center of trade whose grandeur was unmatched in the Ancestral Puebloan world. A culture deeply attuned to the cosmos—multiple structures at Chaco were oriented to the solstices and equinoxes—the Chacoans would have born witness to the new star. It is possible that they recorded the supernova—now faded into what modern astronomers know as the Crab Nebula in the constellation Taurus—on a remarkable pictograph panel near the western end of Chaco Canyon.
Continuing our day in Chaco Canyon on May 20 [2022], Sean and I determined to hike to see the Supernova Pictograph.
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