Ironically enough, Ray Bradbury's Martian Chronicles. Written in the generation before the days of actual space travel and exploration, this poignant and haunting work by Bradbury offers a visionary account of man's encounter with a world seemingly different than our own. Its sympathetic approach to the ideals of our future conduct when encountering (confronting?) such a culture offers insights that are applicable even in this modern day and age. Though written in 1946, this book is by no means outdated and is a classic work of science fiction.
Glenn Knoblock, historian & author
Wolfeboro Falls, NH