The Darkest Dark is a science fiction picture book written by Chris Hadfield, the renowned Canadian astronaut. The story follows a young boy named Chris who dreams of becoming an astronaut. However, he is afraid of the dark and the unknown of space. Through his journey, Chris learns to overcome his fear and embrace the wonders of the universe. This beautifully illustrated book not only captures the imagination of young readers but also inspires them to pursue their dreams and conquer their fears.