Author Description

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. All quantities are now given in both common units and metric units