Watch High Frontier

The High Frontier: The Untold Story of Gerard K. O'Neill tells the untold story of the life and influence of the late physicist and space colony pioneer Dr. Gerard K. O'Neill. In 1977, O'Neill wrote the book The High Frontier: Human Colonies in Space, which sparked an enormous grassroots movement to build Earth-like habitats in space in order to solve Earth's greatest crises.

High Frontier is a 2021 documentary with a runtime of 1 hour and 31 minutes. It has received mostly positive reviews from critics and viewers, who have given it an IMDb score of 7.4.