Suzanne Slade is a mechanical engineer who worked on Delta IV rockets for NASA. She has written more than 150 children's books, including Friends for Freedom: The Story of Susan B. Anthony & Frederick Douglass and the Sibert Honor Book Exquisite: The Poetry and Life of Gwendolyn Brooks. Her many picture books about space include Daring Dozen: The Twelve Who Walked on the Moon and Mars Is: Stark Slopes, Silvery Snow, and Startling Surprises. Suzanne lives near Chicago.