The Inner Reaches of Outer Space is a 1986 book by mythologist Joseph Campbell, the last book completed before his death in 1987. In it, he explores the intersections of art, psychology and religion, and discusses the ways in which new myths are born. In writing the book, Campbell drew on transcripts of a series of lectures and conversations that he gave in San Francisco in the early 1980s, including legendary symposiums with astronaut Rusty Schweickart and with members of the Grateful Dead.