Now a third edition of this popular book is available for those who want to know why astronauts are weightless,
what satellites do and why they don't fall from the sky, how we will live on Mars, and whether or not there is life elsewhere in the universe. New and expanded subjects include the latest concepts in propulsion, high resolution images of Earth from space, debris in orbit, Mir and the International Space Station, exploration of the Solar System and beyond, disturbances in the space environment, and much more. The book is profusely illustrated. This edition has twice as many color pages as the
second edition. It was originally written as a textbook for an undergraduate liberal arts course, with or without mathematics. All quantities are now given in both common units and metric units.
"Intended as a university introductory-level text, this book
manages to combine the profusion of glossy images found in popular science publications with sufficient technical depth to satisfy the more curious layman or student…A definite must have for those who wish to gain an understanding of the science of space flight regardless of the readers' technical background." -- A.R. Thompson, Spaceflight, Vol. 44 No. 1, January 2002