

The Most Unknown
- Documentary
An epic documentary film that sends nine scientists to extraordinary parts of the world to uncover unexpected answers to some of humanity’s biggest questions. How did life begin? What is time? What is consciousness? How much do we really know? By introducing researchers from diverse backgrounds for the first time, then dropping them into new, immersive field work they previously hadn’t tackled, the film pushes the boundaries of how science storytelling is approached. What emerges is a deeply human trip to the foundations of discovery and a powerful reminder that the unanswered questions are the most crucial ones to pose. Directed by Emmy-nominated and Peabody Award-winning filmmaker Ian Cheney and advised by world-renowned filmmaker Werner Herzog, The Most Unknown is an ambitious look at a side of science never before shown on screen.
The Most Unknown is an Emmy-nominated documentary that follows nine scientists to remote locations worldwide as they tackle humanity's biggest unanswered questions: How did life begin? What is time? What is consciousness? Directed by Ian Cheney and advised by Werner Herzog, this 2018 film reimagines science storytelling through immersive fieldwork and cross-disciplinary collaboration.
When does The Most Unknown come out?
Where to watch
Streaming availability in United States
Not available on any tracked streaming service in United States right now.
Availability varies by country. A VPN can let you watch content licensed in another region, though most streaming services prohibit it in their terms of service. Use at your own discretion. Contains affiliate links.
In cinemas
Theatrical release in United States
No date confirmed for United States yet · Earliest worldwide: Wide release in Denmark
Theatrical dates from TMDB. Cinema chain links go to the official websites for showtimes and bookings — check there for the actual showtimes near you.
Where to watch The Most Unknown by country
Top cast
Follow an actor to track their next projects- Jennifer L. MacaladySelf - Microbiologist, Penn State University
- Davide D'AngeloSelf - Physicist, Università degli Studi di Milano
- Axel CleeremansSelf - Cognitive Psychologist, Université libre de Bruxelles
- Luke McKaySelf - Astrobiologist, Montana State University
- Rachel L. SmithSelf - Astrophysicist, North California Museum of Natural Sciences
Erik CordesSelf - Ecologist & Chief Expedition Scientist, Temple University- Victoria OrphanSelf - Geobiologist, California Institute of Technology
- Jun YeSelf - Physicist, University of Colorado-Boulder & National Institute of Standards and Technology
- Anil SethSelf - Neuroscientist, University of Sussex
- Laurie SantosSelf - Cognitive Psychologist, Yale University

Trailer
The Most Unknown (Official Documentary Trailer)
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The Most Unknown — frequently asked
When was The Most Unknown released?
The Most Unknown premiered on March 16, 2018.
Who directed the film?
The film was directed by Emmy-nominated and Peabody Award-winning filmmaker Ian Cheney, with creative advice from renowned filmmaker Werner Herzog.
What is the documentary about?
The film sends nine scientists from diverse backgrounds to extraordinary locations around the world to conduct fieldwork and explore fundamental questions about life, time, consciousness, and the limits of human knowledge.
Where can I watch it?
The Most Unknown is available on various streaming platforms; check your preferred service or rental provider for current availability.









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