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In the present work it is evaluated the evolutionary state of the Orion Beltstars, an asterism very important for the ancient Egyptians, finding that, whenthe pyramids were built, the brightness of the three stars of the Belt waspractically the same as today. This not trivial result has importantimplications in the framework of the so-called Orion Correlation Theory, acontroversial theory proposed by Bauval and Gilbert (1994), according to whicha perfect coincidence would exist between the disposition of the three stars ofthe Orion Belt and that of the main Giza pyramids, so that the latter wouldrepresent the monumental reproduction on the ground of that important asterism.  ----  Nel presente lavoro viene determinato lo stato evolutivo delle stelle dellaCintura di Orione, ricavando che, all'epoca della costruzione delle piramidi,la luminosita' delle tre stelle della Cintura era di fatto uguale a quellaodierna. Tale non banale risultato riveste una importanza fondamentalenell'ambito della verifica della controversa Teoria della Correlazione diOrione proposta da Bauval e Gilbert nel 1994, secondo la quale esisterebbe unaperfetta coincidenza tra la disposizione delle tre stelle della Cintura equella delle tre piramidi nella piana di Giza.

Stato evolutivo delle stelle della Cintura di Orione ed implicazioni archeoastronomiche