The Darkest Dark, written by Chris Hadfield and illustrated by Terry Fan and Eric Fan, is a science fiction picture book based on the childhood experiences of astronaut Chris Hadfield. The story follows a young boy named Chris who dreams of becoming an astronaut but is afraid of the dark. Through his fascination with space and the Apollo 11 moon landing, Chris overcomes his fear and embraces the wonders of the universe. This inspiring book encourages children to pursue their dreams and conquer their fears.