Unsealed: Alien Files - The Space Force

Seizoen: 4 - Aflevering: 4 / 89 - Eerst uitgezonden: 01 mei 2015 - Episode ID: 1137501

Since the early 1960s, we've experimented with how to travel off planet Earth. Many experts believe America has operated a secret Space Force for decades, with ultra high-tech ships designed for missions beyond Earth's orbit.