Concentrating on some 30 years of the active development of observational astronomy as recorded in the famous astronomy journal for amateurs and professionals, Sky and Telescope, this is Volume I in the Sky and Telescope library of astronomy. Five sections: The Dawn of Understanding; Newton's Mechanical System; Recent Probings of Space; The Hazard of Interplanetary Space; and Our Moon, A Big Satellite offer a wide variety of tidbits by such men as Herschel, Streuve, Menzel, Baldwin, Whipple, Ley, Cohen, Tombaugh, and staff members; and touch on all the important solar system investigations from early times to late 1963.