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00:01:04
See how patterns of light change throughout the day at Chaco, and hear G.B. Cornucopia and Shelly Valdez share their impressions of the phenomena of light cycles in Chaco Canyon.

0:59:00
Join the Live@ crew and NASA scientists as we delve into the ancient knowledge of the Chacoans, daily sky watchers who amassed a great knowledge about the movements of the sun. And learn why today's astronomers and solar physicists continue to watch the sun, using modern ground-based observatories and orbiting space telescopes.

00:03:02
Join us in Chaco Canyon to think about what we can learn from watching shadows.

00:03:43
The sun holds an honored place in the lives of Southwestern Native Americans. Hear insights into the importance of the sun from Dr. Shelly Valdez, educator at Laguna Pueblo; Dr. Isabel Hawkins, solar researcher at UC Berkeley; and Andrew Garcia Sr., coordinator of Tewa dancers.

00:00:24
Time-lapse footage of light moving across a pictograph at Wijiji 931.

00:00:27
Watch as the square of light moves across the wall and niches at Rinconada.