Nasa's Unexplained Files

9:00 AM to 10:00 AM
Friday 22 November
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Top Secret Terror

Season 2 Episode 2 of 8

Images of Mercury reveal spider-like formations on its surface which may be an odd geological formation or something more ominous

Nasa's Unexplained Files airs on Discovery Science at 9:00 AM, Friday 22 November. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
Unexplained ➝ Mysteries