As a child, Mae Jemison dreamed of doing great things in medicine and exploring space. She faced formidable obstacles, but overcame them all to achieve the dreams so many had thought impossible for her to do. Jemison became a doctor, and then began training as an astronaut, becoming the first African American woman in space. This book explores her inspiring life from childhood to adulthood, detailing the highs and lows of her career and life.