Name: Undaunted: The Forgotten Giants of the Allegheny Observatory
Genre: Documentary
Released: 2013-01-01T05:00:00.000Z
Duration: 56 min 1 s
Cast: David Conrad, Neil deGrasse Tyson, Tom Crouch, Robert R. Bell, Len Caric

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Undaunted: The Forgotten Giants of the Allegheny Observatory