Dava Sobel: The Women Who Brought the Stars to Earth

Starting in the late 19th century, a group of women at the Harvard Observatory pored over hundreds of thousands of glass photographic plates bearing images of billions of stars. It was the beginning of a revolution in understanding what stars are made of and how far away they are. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.