NASA's Unexplained Files

Season 6 Episode 6: Secrets of the Alien Signals

When NASA begins a strange experiment to communicate with dolphins, experts investigate if it's a prelude to making alien contact. But some fear that such a discovery could have apocalyptic consequences.

Genre:

Documentary, Talk, Mystery

Seasons:

6

Episodes:

47

Cast:

Quality:

HD

Duration:

60 min

First Air:

2012

Rating:

7.1