Since the dawn of civilization, we humans have gazed at the night sky wondering if we really are alone in the universe. Countless sightings of alien life have been reported throughout human history (E.T. even gets a mention in The Bible), but we have yet to definitely prove its existence.

Prior to his passing, Stephen Hawking said that the “idea that we are alone in the universe seems, to me, completely implausible and arrogant”, as science has proven the existence of so many planets and stars that “it’s extremely unlikely that we are the only form of evolved life.”

Until now, one of the most convincing pieces of evidence in favor of alien life was a six-inch skeleton that was found in Chile back in 2003. It’s been a source of fascination for the past 15 years, and scientists have finally been able to explain the truth behind it using the power of DNA testing.

Check out the video below to learn more about the documentary the skeleton inspired:

The skeleton itself was found in the Atacama Desert by an amateur collector, Oscar Muñoz. More specifically, in a deserted Chilean town. Dubbed ‘Ata’ because of where it was found, the skeleton’s origins certainly sound like something straight out of a sci-fi movie.

Muñoz discovered the skeleton inside a leather pouch. It was wrapped in a white cloth and had a number of unusual features which caused him – and thousands of others – to conclude that it had to be alien. Due to Ata’s small size, it was thought to be a mummified extraterrestrial.

Even though it was a mere six inches in length, the skeleton was in perfect condition. Unlike most human skeletons which have 10 ribs, it had 12, and this, coupled with Ata’s particularly large eye sockets and oversized head which ended in a point, certainly suggested the skeleton was alien.

For 15 years, however, the truth behind Ata remained unknown and the skeleton itself ended up in a private collection. It was only after the release of the 2013 documentary Sirius that people began to demand an explanation for what exactly Ata’s skeleton was beyond the proof of alien life.