TECH Signal 133
1960s theory proposes Stonehenge functioned as a prehistoric eclipse-predicting computer
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A 1960s astronomy professor argued Stonehenge’s stone alignments and 56 holes enabled ancient eclipse prediction using early computational methods.
This theory reframes prehistoric engineering as potentially computational, challenging assumptions about ancient technological capabilities. For engineers, it highlights how simple physical structures can encode complex astronomical patterns without digital tools.
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Gerald Hawkins used an IBM computer to model Stonehenge’s alignments, proposing it tracked lunar and solar cycles to predict eclipses.
The 56 Aubrey holes at Stonehenge were central to Hawkins’ theory as a counting mechanism for eclipse cycles.
Critics later contested the theory, but it temporarily shifted archaeological focus toward computational interpretations of ancient sites.
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