Two guides. One Sun.
Written for curious readers, families and classes from about age ten. Short chapters, real places, and the science that connects ancient sun watching with the Sun we study today.
The Sun–Earth connection at Chaco
How Ancestral Puebloans read the horizon, what the Sun Dagger shows, and how today’s spacecraft watch the active Sun.
- A canyon under a wide sky
- Great houses and straight lines
- Reading the horizon
- The Sun Dagger
- The Moon’s long rhythm
- Kivas and the four directions
- The active Sun
- Visiting with respect
A photographic journey to the Yucatán
Like modern scientists, the ancient Maya were careful observers. Follow their calendars, temples and Venus tables, site by site.
- A land of limestone and cenotes
- Counting the days
- El Castillo and the serpent of light
- Venus and El Caracol
- Sunrise through a doorway
- The Sun overhead
- Cities planned by the sky
- The Maya today
For classrooms
Each chapter fits one lesson. Pair it with the sky viewer and ask students to predict sunrise on their birthday.
No sign-up
Both PDFs are free. Print them, share them with a class or keep them on a phone for the trail.
About the originals
This domain once hosted the 2005 Traditions of the Sun project. These guides are new, independent texts, not copies of those books.
Plan a morning at the horizon
Pick a date in the viewer, note the sunrise azimuth, and check it against a real skyline. It is the oldest experiment in astronomy.