Here's more from the YouTube description:
Those looking for proof extra-terrestrial life forms exist have been dealt a blow after the remains of a 'space alien' were actually determined to be those of a human. The small skeleton, known as Atacama Humanoid, was discovered in the Chilean desert ten years ago and it was initially hoped it could be evidence there was life on another planet.Oscar Munoz, who made the find, described it as: 'A strange skeleton, no bigger than 15cm [the size of a pen]. 'It was a creature with hard teeth, a bulging head with an additional odd bulge on top. 'It's body was scaly and of dark colour. Unlike humans, it had nine ribs.'But according to Huffington Post it has now been revealed by documentary Sirius that it is actually a mummified human. A medical expert from the Basque University in Spain is quoted as saying: 'It's a mummified body with all typical characteristics of a foetus.'The body displays all the structures and anatomical links normal for the head, trunk and extremities. 'Taken together, the proportionality of the anatomical structures... [allows us] to interpret beyond doubt, that this is a mummified human foetus.'