Back in 1999, paranormalist and former Magnum, P.I. writer Lloyd Pye introduced the world to a misshapen skull he claimed as proof of extraterrestrial life. The so-called "Starchild skull" is child-sized and features an enlarged cranium, a flattened back, and no sinuses. Pye also claimed the skull's teeth were much more worn down than a child's would be, and that it was made of organic materials supposedly unknown to science. Pye believed the skull belonged to an alien-human hybrid with a human mother and extraterrestrial father, resembling the "little grey men" that were depicted by sci-fi author Whitley Strieber and the TV show The X-Files.

However, scientists who examined the Starchild skull didn't agree. A dentist who examined the skull's teeth concluded that it belonged to a child aged about 5 years old. A neurologist found that the skull's deformations are consistent with congenital hydrocephalus, and DNA tests concluded the remains were entirely human in origin, not alien.