AN OBSERVER BOOK OF THE YEAR'A peerless intellectual biography. The Glass Universe shines and twinkles as brightly as the stars themselves' The Economist#1 New York Times bestselling author Dava Sobel returns with a captivating, little-known true story of women in scienceIn the mid-nineteenth century, the Harvard College Observatory began employing women as calculators, or "e;human computers,"e; t...