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Aliens: The Big Think

6.9201659mMovieDocumentary

The hunt for aliens is on! After a distinguished career in cosmology Professor Martin Rees, the astronomer royal, has taken up the search for extra-terrestrials. Looking for aliens is no longer science fiction - it is a question that's…

Directorthomas hewitson

Where to watch

BritBoxBritBoxBritbox Apple TV channelBritbox Apple TV channelBBC Select Apple Tv channelBBC Select Apple Tv channel
Availability shown for Canada · rights vary by country

Cast · Directed by thomas hewitson

MRMartin Rees
Martin Rees

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Aliens: The Big Think — streaming FAQ

Which OTT platform streams Aliens: The Big Think?

Aliens: The Big Think is streaming on BritBox, Britbox and BBC Select in Canada. It's not currently on Netflix.

Is Aliens: The Big Think on Netflix?

No, Aliens: The Big Think is not on Netflix in Canada as of September 2026. It's currently on BritBox and Britbox.

Is Aliens: The Big Think on Amazon Prime Video?

No, Aliens: The Big Think isn't on Amazon Prime Video in Canada right now. It's on BritBox and Britbox instead.

Where can I watch Aliens: The Big Think for free?

Aliens: The Big Think is available on BritBox and Britbox in Canada, but you'll need an active subscription — there's no free option right now.