Given the title of her memoir, a reader might expect to be immersed solely in a scientific story: how a geologist progressed over the years from hammering terrestrial rocks as a student to leading a deep-space mission. But this riveting book, beautifully written, is far more. With a brave candor, Elkins-Tanton examines all aspects of her experiences — personal and professional, the good and the bad — to plumb the very meaning of her life. She also offers novel approaches to education, tactics for handling sexual harassment cases in academia and new methods for team-building in scientific research that go beyond the 'hero model'.