From #1 New York Times bestselling author Dava Sobel, the "inspiring" (People), little-known true story of women's landmark contributions to astronomy

A New York Times Book Review Notable Book

Named one of the best books of the year by NPR, The Economist, Smithsonian, Nature, and NPR's Science Friday

Nominated for the PEN/E.O. Wilson Literary Science Writing Award

"A joy to read." -The Wall Street Journal

In the mid-nineteenth century, the Harvard...