By T. Schneck (San Jose, CA) | June 15, 2006

Since the discovery of DM, which many believe constitutes most of the mass of the universe, there has been a debate regarding the baryonic or non-baryonic nature of DM. Current scientific research favors non-baryonic particles with huge new detectors being built today that actually exclude baryons. At its heart, Drexler’s book is philosophical in its approach, taking a contrarian view in the debate. Citing Ockham’s razor and top-down vision, the author sorts recent astrophysics data of others to analyze and resolve the DM issue, asserting that DM consists of relativistic protons, i.e. baryons. A large amount of data is reviewed and the considerations seem persuasive. Not mentioned as a baryonic argument in favor of DM is another philosophical consideration relating to the significance of man in the Universe. If man is significant and perhaps even central in the universe, as Primack suggests in his new book, it would be a shame if the baryons of which we are made turn out to be cosmologically weird stuff. Drexler’s book is worth a read.