This volume introduces significant women in astronomy, beginning with EnHeduanna, a Babylonian Chief Astronomer Priestess who lived around 2350 BCE, and Hypatia of Alexandria, a renowned fifth-century Greek scholar. Nineteen subsequent chapters, featuring scientists that include the first American to have discovered a comet and a designer of the Hubble space telescope, span the gap between ancient times and the present day. With the exception of Sally Ride, the subjects are not well known, but their achievements are notable. Other women astronomers are profiled briefly in sidebars. Photos and other images appear throughout the book, which is also brightened by tan and gold highlights. A worthy addition to science collections, this well-documented collective biography not only fills gaps in existing books on astronomers but also offers engaging accounts of the women’s careers as well as unusually clear explanations of what they achieved and why each discovery was important.