NASA's Unexplained Files - Season 2 (2015) (temporada)
Estados Unidos,
2015, 43 min
Sinopsis(1)
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? (Science Channel)
Reparto
Erik Dellums (narrador)
Estados Unidos
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