This book presents the latest developments in world physics. Chapter One presents the principles of small angle neutron scattering oriented towards the study of complex macromolecular, biological and hybrid nanoassemblies. Chapter Two reviews how a synergistic use of quasielastic neutron scattering (QENS) and Molecular Dynamics (MD) can help shed light on the complex behaviour of confined fluids. Chapter Three discusses the testing of multi-layer structures for refractometric optical sensing performances. Chapter Four addresses the physical analysis of planetary hyperspectral images by massive inversion. Chapter Five provides a brief incursion into the realm of pulsars. Chapter Six analyses the rotation stability of the neutron stars on the observed periodic radiation of radio pulsars. Chapter Seven examines the physical effects of Bragg coupling of waves at the plane with spatially oscillating surface impedance.