NASA's Unexplained Files Season 5 Episode 4 - Secret Aliens

Airdate: 2018-Jan-13

Episode summary:

An astronomer records an unusual radio signal from beyond our solar system. FBI agents find classified documents at the home of a NASA scientist. When scientists discover strange DNA in the octopus, they examine if their origins could be alien.

About NASA's Unexplained Files series:

On NASA’s Unexplained Files, strange flying objects have been caught on NASA’s cameras and astronauts have reported seeing UFOs. Some o...Show more >