Special Thanks go to Mrs. Liz Glenn, Librarian & Technical Coordinator, and Mrs. Roberta Freeman, SPACE TEACHER, teachers with the Huntsville, AL City Schools , for their valuable advice and input.

Special thanks also go to Kerri Satterfield, our daughter, for her art work, guidance from a kids' perspective, and other contributions!

We also appreciate the work that has gone into the many links, maps, charts, and satellite images that are found within these pages. They are produced and provided via the Internet by the students, researchers, and educators at the institutions of higher learning sites and resources found within these pages.