`Dark Star' presents Lloyd's outstanding research on the subject of Planet X. It is the definitive book on the subject: well researched and clearly written. Lloyd explores the history of the Planet X subject, which extends back about 100 years. His research into the topic seems to have been motivated by a desire to understand Zecharia Sitchin's Nibiru. He argues for a Dark Star scenario to explain how living beings could live in the outer solar system.
Lloyd then presents the scientific anomalies in the outer solar system, of which there are many, and how they point to the existence of a missing massive planet. Mixed into this are various media and interview quotes from academic astronomers who favour the existence of a missing planet beyond Pluto. Finally, Lloyd explores the effect of this sub-brown dwarf on the other planets, and on the Sun. His chapter on catastrophes associated with this Dark Star is particularly strong, and original.
This book is not for the faint-hearted. The ideas in it are challenging, and the science is sometimes difficult, but ultimately the book is highly rewarding.