"aliens"

According to the "Cryptoterrestrial Hypothesis (CTH)", aliens could be visiting their friends on Earth in spaceships. 

The study by Harvard University's Human Flourishing Program suggests that the cryptoterrestrials could be living among us, underground or on the Moon.

As scientists dispute whether the bodies discovered in Mexico are aliens or just our ancestors, the interest in other humankinds is piqued even further

Notably, these remarks come days after 1000-year-old fossils of alien corpses were displayed in the Mexico Congress

According to sources, the report does not provide any clear link or association between more than 120 incidents of UFO sightings from the past two decades, and a possibility of Earth having been visited by aliens.