Expological Investigation is the ninety-seventh instalment in the Little Blue Book Series and comprises the first and second discourses of the Septidoxy, which is itself the seventh disquisition of the Omnidoxy, Astronism’s founding book. The Expological Investigation discourse introduces the discipline of spaciology, which is an extensive subject encompassing all topics that relate to space in some way. This discourse considers spaciology from an Astronist perspective and includes all Astronist contributions to spaciology. 
 
The Little Blue Book Series was created and first published by Cometan himself as a way to simplify and commercialise the immensity of the two million word length of the Omnidoxy into smaller, more bite-size publications. A successful series from its very first published entry, the Little Blue Book Series has gone on to become a symbol of Astronist commercial literature and a way for Cometan’s words to reach readers of all ages and abilities who remain daunted by the beauty and yet the sheer extensiveness of the Omnidoxy as the longest religious text in history.