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Book & Research > Solstice Project Papers

A Unique Solar Marking Construct

By Anna Sofaer, Volker Zinser, and Rolf M. Sinclair
Science, 19 October 1979, Volume 206, Number 4416, pp. 283-291

Lunar Markings on Fajada Butte, Chaco Canyon, New Mexico

By Anna Sofaer, Washington, DC, R. M. Sinclair, National Science Foundation, Washington, DC and L. E. Doggett, U.S. Naval Observatory, Washington, DC
Archaeoastronomy in the New World, edited by A.F. Aveni, New York: Cambridge University Press, 1982.

The Great North Road: a Cosmographic Expression of the Chaco Culture of New Mexico

By Anna Sofaer
Solstice Project, Washington, DC, Michael P. Marshall, Cibola Research Consultants, Corrales, New Mexico, and Rolf M. Sinclair , National Science Foundation, Washington, DC
World Archaeoastronomy, edited by A. F. Aveni, New York: Cambridge University Press, 1989.

Inter-site Alignments of Prehistoric Shrines in Chaco Canyon to the Major Lunar Standstill

by Anna Sofaer, Robert Weiner, and William Stone. 2017. In The Science of Time 2016: Time in Astronomy & Society, Past, Present and Future, edited by E. Arias, L. Combrinck, et al, pp. 79-102. Astrophysics and Space Science Proceedings 50. Springer, Cham.

News & Events > Archive

Museum Installation of the Sun Dagger Explorer

Museum Installation of the Sun Dagger Explorer
The Solstice Project's interactive computer model of The Sun Dagger of Chaco Canyon opened May 15, 2009, The New Mexico Museum of Natural History and Science Click here for more information

The Science of Time conference, Harvard University

The Solstice Project’s exciting new findings were presented by the National Geodetic Survey of NOAA and the Solstice Project, at The Science of Time conference, Harvard University, June 5 to 9, 2016. View the
completed poster , the poster abstract, and the conference website: Ancient Timekeepers of Chaco: An Investigation into Possible Lunar Alignments of Prehistoric Shrines by William Stone, Anna Sofaer and Robert Weiner