NASA's Unexplained Files

Season 2 Episode 1: Life in Hell

A UFO crashes in Pennsylvania. Was it a secret Soviet satellite or something far more dangerous? On Mercury, NASA finds the impossible: frozen water. A strange object causes a skyscraper-sized shadow on the surface of Mars's largest moon. What is it?

Genre:

Documentary, Talk, Mystery

Seasons:

6

Episodes:

47

Cast:

Quality:

HD

Duration:

60 min

First Air:

2012

Rating:

7.1