James R. Hansen, known for his comprehensive biography of Neil Armstrong, "First Man: The Life of Neil A. Armstrong," is a writer and biographer specializing in history. Hansen, who works as a history professor at Auburn University, is one of the rare names who successfully blends his academic career with popular history writing. The biggest turning point in Hansen's career was gaining the trust of Neil Armstrong to write his official biography. This book, which covers Armstrong's life in depth, formed the basis of the movie First Man on the Moon, directed years later by Damien Chazelle and starring Ryan Gosling. Hansen also contributed to the script process of this 2018 film, and thus his work left a permanent mark in both the literature and cinema worlds. Hansen, who reflects his deep knowledge on space history and aviation in many of his works, also attracted attention with his 2013 documentary Challenger Disaster. This production, about the space shuttle disaster in 1986, resonated with the audience by revealing the human and institutional dimensions behind the incident. Hansen, who stands out with his commitment to historical reality and his respect for the characters he describes, is a name that has proven his ability to convey a technical subject to large audiences in both the literature and cinema worlds.