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Published on Oct 28, 2013
This is the best starting place for those new to the topic of Planet X, because if presents a foundation understanding of the topic. It explains the various names used to describe these objects and offers a comprehensive history of the topic dating back to 1781 through to the present. For newbies, it is a real time saver, because it condenses months if not years of personal research for most, into a one-hour presentation.