About the Author
Dr. Daniel W. Fry was an internationally known scientist, researcher and electronics engineer. As a vice-president at Crescent Engineering, he developed a number of parts for the guidance system of the Atlas missile. Earlier in his career, he worked for Aerojet General Corporation at White Sands Proving Ground. He is the author of several important works in the fields of physics and outer space, including Atoms, Galaxies and Understanding, Steps to the Stars and The Curve of Development.