Researchers believe extraterrestrials left one vital clue in its design in Giza, Egypt – its co-ordinates.
The speed of light is 299,792,458 metres per second and the geographic co-ordinates for the Great Pyramid are 29.9792458°N.
However, humans could not measure the speed of light with this precision until 1950.
YouTube user Manu Seyfzadeh asks: “Is it possible that those who placed the great pyramid on the Giza plateau had an inkling of the speed of light to a degree of accuracy not possible without highly technical equipment?”
Another truther writes: “The speed of light in the metric system appears in the design and location of the Great Pyramid, when the decimal point is slid along the value.
“Aliens chose this location for a reason. This striking similarity is difficult to accept as a coincidence.
“There can be no doubt that it is a mathematically intelligent design associated with the stellar belief of its builders.”
Conspiracy theorists are convinced the Pyramid was constructed by aliens dubbed “ancient astronauts”.
They supposedly visited Earth thousands of years ago, studied different tribes and were mistaken for Gods.
This coin was discovered in Egypt – could that be an alien being?
“Aliens chose this location for a reason”
These “researchers” believe extraterrestrial beings bestowed the Egyptians with advanced scientific knowledge.
Others have previously claimed the Pharaohs of ancient Egypt were alien hybrids.
Mocked-up pictures of the famous gods next to extraterrestrials have surfaced online.
The reports point out that Egyptian legends date their origins back to the Zep Tepi, which translates as the “first time”.
This was a “golden age” when legend says Gods descended from the sky in eggs or boats.