Reveals the little-known true story of how the Harvard College Observatory employed women to interpret observations their male counterparts made via telescopes, in the mid 19th century. These women went on to discern what stars were made of, divided them into meaningful categories and even found a w...

Reveals the little-known true story of how the Harvard College Observatory employed women to interpret observations their male counterparts made via telescopes, in the mid 19th century. These women went on to discern what stars were made of, divided them into meaningful categories and even found a way to measure distances across space by starlight. From the author of }Longitude{.