George Ellery Hale's telescopes set the stage for astronomy and space exploration throughout the 20th century, revealing the greatest discoveries since Galileo and Copernicus.

Palomar Hale telescope dedication, 1948.

Considered the father of astrophysics, Hale strived personally and professionally to build the great telescopes at the Yerkes and Mount Wilson Observatories, and finally the 20-year effort to build the million-pound telescope on Palomar Mountain — considered the “moon shot” of the 1930s and 40s. Hale’s observatories enabled Edwin Hubble’s 1929 discovery of the expansion of the universe.

Watch Preview Trailer 2 on PBS. See more from The Journey to Palomar.

Journey to Palomar, Wednesday at 9:00 p.m. on PBS 6.

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