Undaunted: The Forgotten Giants of the Allegheny Observatory
Undaunted: The Forgotten Giants of the Allegheny Observatory is available in the US on Amazon Prime Video, Amazon Video, Apple TV Store, Hoopla, and 8 more.
Where to Watch in the US
Undaunted: The Forgotten Giants of the Allegheny Observatory streaming guide
Streaming info last updated: November 8, 2026
Undaunted: The Forgotten Giants of the Allegheny Observatory (2012) is a documentary from the United States. In the US, it’s available on Amazon Prime Video, Amazon Video, Apple TV Store, and Hoopla.
The easiest way to stream the movie is with a subscription to Amazon Prime Video. On a budget? You can watch it for free (usually with ads) on Hoopla, YouTube Free, or Plex. For current subscription, rental, and purchase options and each platform’s direct “Watch” link, see the Where to Watch in the US section above. izlebunu hosts no content; it sends you straight to the streaming platform.
- FreeHoopla, YouTube Free, Plex, Filmzie, Amazon Prime Video Free with Ads, Fawesome, Cineverse, Tubi TV, Filmtap, Amazon MX Player
- SubscriptionAmazon Prime Video
- GenreDocumentary
- OriginUnited States · 2012
Plot
This film tells the surprising story of how the Allegheny Observatory has been a world leader in the study of the stars since the 1860s. Self-educated, and often facing unrelenting hardships, the people associated with the Allegheny Observatory defied the odds to make enormous contributions to the founding of astrophysics and early aviation.
Cast
Cain AlexanderYoung Samuel Langley
David ConradNarratorFrequently Asked Questions
Where can I watch Undaunted: The Forgotten Giants of the Allegheny Observatory?
Undaunted: The Forgotten Giants of the Allegheny Observatory is available in the US on Amazon Prime Video, Amazon Video, Apple TV Store, Hoopla, YouTube Free, Plex, Filmzie, Fawesome, Cineverse, Tubi TV, Filmtap, and Amazon MX Player. You’ll find each platform’s current options and “Watch” links in the “Where to Watch in the US” section on this page.
What audio and subtitle options does Undaunted: The Forgotten Giants of the Allegheny Observatory have?
Audio and subtitle options for Undaunted: The Forgotten Giants of the Allegheny Observatory depend on the platform. US streaming services usually offer English closed captions (CC); other languages vary by service.
Which subscription includes Undaunted: The Forgotten Giants of the Allegheny Observatory?
Undaunted: The Forgotten Giants of the Allegheny Observatory is included with a subscription to Amazon Prime Video, so subscribers can watch it at no extra cost.
Can I rent or buy Undaunted: The Forgotten Giants of the Allegheny Observatory?
Yes. In the US, you can rent or buy Undaunted: The Forgotten Giants of the Allegheny Observatory on Amazon Video or Apple TV Store.
Can I watch Undaunted: The Forgotten Giants of the Allegheny Observatory for free?
Yes. Undaunted: The Forgotten Giants of the Allegheny Observatory is currently free to stream in the US (possibly with ads) on Hoopla, YouTube Free, Plex, Filmzie, Amazon Prime Video Free with Ads, Fawesome, Cineverse, Tubi TV, Filmtap, or Amazon MX Player.
How long is Undaunted: The Forgotten Giants of the Allegheny Observatory?
Undaunted: The Forgotten Giants of the Allegheny Observatory runs about 62 minutes (1h 2m).
What genre is Undaunted: The Forgotten Giants of the Allegheny Observatory?
Undaunted: The Forgotten Giants of the Allegheny Observatory is a documentary from the United States.
Who stars in Undaunted: The Forgotten Giants of the Allegheny Observatory?
The main cast of Undaunted: The Forgotten Giants of the Allegheny Observatory includes Cain Alexander, Kurt Bell, Robert R. Bell, Len Caric, and David Conrad.
Can I watch Undaunted: The Forgotten Giants of the Allegheny Observatory on my phone or smart TV?
Yes. Amazon Prime Video, Amazon Video, Apple TV Store, Hoopla, and the other platforms listed above work on iOS and Android, in web browsers, and on most smart TVs, so you can watch Undaunted: The Forgotten Giants of the Allegheny Observatory on the device of your choice.
When was Undaunted: The Forgotten Giants of the Allegheny Observatory released?
Undaunted: The Forgotten Giants of the Allegheny Observatory was released in 2012.
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