This timely collection of articles celebrates the work of Maurice Shapiro, who is internationally distinguished for his contributions to the development of cosmic-ray physics. The papers focus primarily on cosmic-ray physics, X-ray, gamma-ray and neutrino astronomy and cosmology. The scope extends from the inner solar system to distant radio galaxies. Each chapter is written by a leading scientist in the field, including James Van Allen, discoverer of the Van Allen radiation belt and Fred Reines, discoverer of the neutrino.