This video says about itself:

How a Team of Female Astronomers Revolutionized Our Understanding of Stars

24 February 2016

At the turn of the 19th century, male astronomers mainly studied galaxies, leaving female scientists wide latitude to research and innovate. Indeed they accomplished truly stellar work. Frebel’s book is “Searching for the Oldest Stars: Ancient Relics from the Early Universe“.

From Science News in the USA:

‘The Glass Universe’ celebrates astronomy’s unsung heroines

Women in the 19th century played underappreciated role in mapping and understanding the stars

By Macon Morehouse

8:00am, November 27, 2016

The Glass Universe
Dava Sobel
Viking, $30

In the early 1880s, Harvard Observatory director Edward Pickering put out a call for volunteers to help observe flickering stars. He welcomed women, in particular — and not just because he couldn’t afford to pay anything.

At the time, women’s colleges were producing graduates with “abundant…