The author of the book, a professor at the University of Washington, paints a fascinating picture of the scientific revolution that is taking place now in astronomy. This revolution began in the 40s after the discovery of radio emission from celestial objects. Its next stages were: the removal of astronomical instruments outside the earth's atmosphere on rockets and satellites, flights of automatic stations to the Moon, Venus and Mars, and, finally, the delivery of samples of lunar rocks to Earth. This revolution will certainly be of great importance to humanity for many, many decades to come.