I found this slim volume while moving books to safety on the upper floors of the house after a sump pump failure last year. With a publishing date of 1979 some of the information is a bit dated. An example, at the time of publication there were no exoplanets that had yet been found. Still the authors use of dealing with the cosmos as a series of ‘landscapes’ viewed in visible light, radio, ultraviolet, X-Ray and Microwave radiation an effective way to introduce the reader to the fascinating field of Radio Astronomy. Detailed enough to be interesting but not so deep into each area to bog the reader down, an excellent introduction.