The Five Ages of the Universe has 251 pages.
The Catalogue of the Universe has 224 pages.
The Ambidextrous Universe has 276 pages.
Captive Universe has 185 pages.
The Hidden Universe has 134 pages.
Email to the Universe has 256 pages.
A Different Universe has 272 pages.
The Universe Maker has 138 pages.
Mastering the Universe has 240 pages.
The Quantum Universe has 272 pages.
The Universe in a Nutshell has 224 pages.
Rocks of Ages has 256 pages.
The Gene Wars universe has 390 pages.