The Changing Universe by John Pfeiffer

Hardcover. Condition: Very Good+, Dust Jacket: Very Good-. 1956. Random House. 1st Edition. Illustrated.

Illustrated by Sol Ehrlich.

Distant nebulae and galaxies, star systems lying far beyond the edges of our Milky Way, are powerful broadcasting stations. They emit intense radio waves, which can be heard by mammoth new radio telescopes especially designed for exploring the sources of these radio signals. Thus, in addition to monitoring light waves astronomers also listen to radio waves from the depths of space.

Mr. Pfeiffer describes research of the pioneering investigators and the unusual formations that have been observed and identified so far.