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Left, Alignment of the Pyramid of Khafre with the position of the stars Pheeda and Megrez in the constellation of Ursa Major (the Great Bear, also popularly known as the Plough or the Big Dipper) in the year 2545 B.C. Right, section of the Pyramid of Cheops with its access gallery pointing towards Polaris (Source: Emille Prisse).  

Left, Alignment of the Pyramid of Khafre with the position of the stars Pheeda and Megrez in the constellation of Ursa Major (the Great Bear, also popularly known as the Plough or the Big Dipper) in the year 2545 B.C. Right, section of the Pyramid of Cheops with its access gallery pointing towards Polaris (Source: Emille Prisse).  

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In the earliest civilizations of the Ancient World, sun worship developed in parallel with an understanding of the movement of the stars. That was the origin of an architecture that expressed a number of religious and cosmological beliefs. Studies of ancient archaeological remains have revealed that astronomical orientations strongly influenced the...

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Context 1
... whole complex is oriented according to the four points of the compass and an archeoastronomical study conducted by Spence made it possible to establish the date of their construction [8]. The exact year in which the great pyramid of Cheops was constructed was 2545 BC, which coincides with the time of the stars Pheeda and Megrez crossing the meridian (Figure 5 left). ...
Context 2
... was located 16.80 m above ground level and provided access to the pyramid by means of a downward- sloping ramp constructed at an angle of 26º 31`23``. Spence also noted that if this ramp was extended and projected towards the sky, it pointed to the exact position of Polaris at the time of the pyramid's construction (Figure 5 right). ...

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