Catalyst - Closing in the Hunt for Alien Life

Seizoen: 2017 - Aflevering: 3 / 232 - Eerst uitgezonden: 29 augustus 2017 - Episode ID: 1564933

Will we soon find evidence of alien life? Scientists are currently in the throes of an unprecedented search for ET - and an answer to this long-pondered question may come sooner than you think.