Seventeen wide-ranging essays explore the evolving scientific understanding of Mars, and the relationship between that understanding and the role of Mars in literature, the arts and popular culture. Essays in the first section examine different approaches to Mars by scientists and writers Jules Verne and J.H. Rosny. Section Two covers the uses of Mars in early Bolshevik literature, Wells, Brackett, Burroughs, Bradbury, Heinlein, Dick and Robinson, among others. The third section looks at Mars as a cultural mirror in science fiction. Essayists include prominent writers (e.g., Kim Stanley Robinson), scientists and literary critics from many nations.