"This book is an exhilarating and remarkable voyage into a universe that the naked eye cannot see.... Hidden Universe will, without a doubt, open your eyes and your mind to the dramatic and dazzling light-show that is out hidden universe." (Spaceflight, May 2009)

"[This] story of how different telescopes have peeled away layers of the “cosmic onion” offers a useful counterpoint to the history of the telescopes." (Physics World, March 2009)

"Hidden Universe provides a technical description of efforts to study beyond the visual but has been written in a way which would appeal to amateur astronomers who seek to understand the work of professionals especially in PRO-AM projects. Recommended." (The Astronomer, February 2009)