Orion-Sirius-Precession: The Astronomical Trinity

Three astronomical systems are encoded in the Giza complex simultaneously: (1) the Orion Belt correlation in pyramid positions, (2) stellar shaft alignments to Orion and Sirius at ~2500 BCE positions, and (3) the precessional cycle via the 43,200 scale factor. These form a coherent astronomical framework. If the builders tracked precession (25,920-year cycle), they could predict the positions of Orion and Sirius at any epoch. The shaft alignments lock the construction date to ~2500 BCE like a "timestamp," while the precessional encoding shows they understood the deep time context. This implies not just astronomical observation but a theoretical understanding of celestial mechanics spanning millennia.