Unsealed: Alien Files - Alien Journeys

Seizoen: 4 - Aflevering: 9 / 94 - Eerst uitgezonden: 29 mei 2015 - Episode ID: 1137497

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?