The Great Pyramids of Giza were built using technology to communicate with aliens.
Billy Carson, an expert on ancient civilisations, thinks that the Egyptian tombs were actually used centuries ago as transmitters to exchange messages with extraterrestrials.
Harvard University graduate Carson said: "They were utilising it for communication.
"Astrophysicists communicate and send information out into space to connect with ET or talk to ET on the hydrogen frequency.
"Now when you look at the Great Pyramid, it's got these giant shafts on the sides that align with Orion, Aldebaran, Arcturus and all these other star systems on specific time frames.
"They were transmitting on the hydrogen frequency updates to those star systems - why else have those shafts pointed at star systems?"