The Glass Universe

Dava Sobel's "The Glass Universe" unveils the extraordinary, largely unsung story of the women who transformed astronomy from the late 19th to the mid-20th century. Hired initially as "human computers" at the Harvard College Observatory, these brilliant women meticulously analyzed photographic plates of the night sky, making groundbreaking discoveries that redefined our understanding of the cosmos. Starting with the relatives of male astronomers, their ranks grew to include graduates from emerging women's colleges, challenging prevailing societal norms. Through their tireless dedication, figures like Williamina Fleming, who identified numerous variable stars and novae, and Annie Jump Cannon, who developed the universally adopted stellar classification system, pushed the boundaries of scientific knowledge. Later, Dr. Cecilia Helena Payne elucidated the composition of stars, becoming Harvard's first female astronomy professor. Sobel masterfully weaves together their personal letters, diaries, and scientific contributions, illuminating the lives of these pioneering women whose intellectual labor from the "glass universe" of Harvard's archives forever changed our perception of the stars and our place within the universe.