About the Author

William K. Hartmann is the author, most recently, of A Traveler's Guide to Mars and co-author of Out of the Cradle. He is an internationally known scientist, writer, and painter, and winner of the first Carl Sagan Medal from the American Astronomical Society. He has an asteroid--#3341--named after him. He lives in Tucson, Arizona. Ron Miller, co-author of Out of the Cradle, is an illustrator known for his astronomical and science fiction paintings, and served as a production illustrator for the movies Dune and Total Recall. He is a fellow of the British Interplanetary Society and member of the Academy of Astronautics. He lives in King George, Virginia.