Unsealed: Alien Files Season 4 Episode 9S4E9 Alien Journeys
Air Date: Thursday Jun 23, 2016 on Destination America.
Episode viewer ratings from IMDb: 7.5*.
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In order to survive mankind must find a way to navigate the galaxy. Alien encounters have offered a possible glimpse into the secrets of interstellar flight, but how would extraterrestrials know how to navigate the vast regions of space?