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physics.hist-ph2020
A Case Study of the Picture Rocks Sun Dagger, Plus a Review of the Intentionality of Sun Daggers
Bradley E. Schaefer, James Stamm
The Picture Rocks Sun Dagger is a spiral petroglyph on a hillside northwest of Tucson that shows sun dagger events at both the summer solstice and the equinoxes. On each of these d…
physics.hist-ph2018★ 1 cited
Yes, Aboriginal Australians Can and Did Discover the Variability of Betelgeuse
Bradley E. Schaefer
Recently, a widely publicized claim has been made that the Aboriginal Australians discovered the variability of the red star Betelgeuse in the modern Orion, plus the variability of…
physics.hist-ph2016
Astronomical and Historical Evaluation of Molnar's Solution for the Star of Bethlehem
Bradley E. Schaefer
Previously, the most prominent explanation for the Star of Bethlehem was to identify one of many astronomical events in the sky as being the inspiration for the trip of the Magi. H…