Galaxy: Mapping the Cosmostells the rich scientific story of galaxy evolution and observation discoveries of 'spiral nebulae', the nature of galaxies and the current 'World Model'. Astronomer James Geach takes us on a tour of what is currently known and unknown, discussing why the ancient science of astronomy continues to fascinate humanity. Appealing to all readers interested in astronomy and cosmology, and featuring 100 colour illustrations, Galaxy explores the enigma of our cosmic habitat, chronicling how our home in the Universe came to be.