Nasa's Unexplained Files
Planet of the Metal Aliens
Season 4 of 8
Experts investigate if a nearby exoplanet could be the home to an alien civilisation after a new discovery confirms that life can thrive on such a world
Nasa's Unexplained Files airs on Discovery Science +1 at 12:00 AM, Tuesday 19 November. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
Unexplained ➝ Mysteries