In the summer of 2021 a series of static images which were taken in 2002 inside the lower northern shaft of the Great Pyramid of Giza were released to the public. In this paper I analyse those images and from that analysis deduce the linear and angular construction parameters of the shaft. I show that the shaft contains a series of rotations around its longitudinal axis which conform to a logical system and that this logical system can be used to extract mathematically precise angular measurements because the system uses known geometric principles.

From the analysis of the shaft's design I show that the metal rods that are located inside the shaft are an original part of the pyramid's construction and explain how one of the two rods was used as a spring mechanism to release a side door within the shaft, behind which was contained a 7cm diameter stone ball that rolled out of the shaft in 1872. Furthermore I explain how the act of investigating this shaft by poking rods up the shaft's incline triggered this spring mechanism to operate.

By using the geometric angles derived from the shaft's construction I show that the stone ball is a model of the Earth and that by solving the mathematics puzzle that the shaft contains, an exact value for the axial tilt of the Earth can be obtained. I then use Laskar's astronomy formula for calculating axial tilt from a known date in reverse to determine the astronomical event date that corresponds to the tilt angle of the shaft and thereby determine that the Great Pyramid of Giza contains an astronomically correct model of the Earth at the winter solstice of 2729 BCE. I show that the values obtained from the pyramid's geometry conform to modern ephemeris data within the error margins of that modern data.

Finally, I show that the building contains a model of the Earth's orbit around the sun, and that the semi major axis of this orbit, the astronomical unit, is specified precisely in architecture using light seconds in a relativistic TDB time frame.