About the book
This book aims to present a survey of current versions of the ΛCDM cosmology presenting dark matter being central to the various models of this philosophy. Astronomical support for dark matter in far-flung galaxies is plentiful but detection of dark matter as microscopic particles has been frustratingly difficult and explanation is required. This may be because we have not used proper detection techniques or the properties of dark matter are quite different from those of ordinary matter and not properly understood. This means we need more input from theoretical physicists to better guide our attempts to, directly and indirectly, detect dark matter. On the other hand this may mean that dark matter is distributed primarily as ordinary matter – the missing baryonic matter problem – about or outside galaxies, either in the form of poorly detected gas or as brown dwarf stars, black holes or the like. In addition, we are open to new proposals including detection aids such as artificial intelligence, gravitational waves and even geological techniques. Finally, many will appreciate a summation and personal view of the history of dark matter by astronomers past and present.