Special Issue Dedicated to Professor Hannes Alfv¿on the Occasion of His 80th Birthday, 30 May 1988.- Observations of Propagating Double Layers in a High Current Discharge.- Critical Ionization Velocity Interaction: Some Unsolved Problems.- Velocity Limitation of a Neutral Dust Cloud Colliding with a Magnetized Plasma.- Dynamical Aspects of Electrostatic Double Layers.- Cosmic Electric Currents and the Generalized Bennett Relation.- Elementary Ideas Behind Plasma Physics.- The Dielectric Analogue of Magnetohydrodynamics.- Magnetosphere-Ionosphere Interactions ¿ Near-Earth Manifestations of the Plasma Universe.- Acceleration of Auroral Particles by Magnetic-Field Aligned Electric Fields.- Parallel Electric Fields Accelerating Ions and Electrons in the Same Direction.- Birkeland Currents in the Earth¿s Magnetosphere.- Auroral and Magnetic Variations in the Polar Cusp and Cleft ¿ Signatures of Magnetopause Boundary-Layer Dynamics.- Plasma Acceleration, Injection, and Loss: Observational Aspects.- Charged Dust in the Earth¿s Magnetosphere.- Generalized Adiabatic Theory Applied to the Magnetotail Current Sheet.- Particle Dynamics and Currents in the Magnetotail.- Hydromagnetic Waves Associated with Possible Flux Transfer Events.- Free Convection and Mass Transfer Effects on the Magnetohydrodynamic Flows Near a Moving Plate in a Rotating Medium.- An Electric-Current Description of Solar Flares.- Solar Flares through Electric Current.- Global Wave Patterns in the Sun¿s Magnetic Field.- Temporal Variations of Low-Energy Cosmic-Ray Protons on Decade to and Million Year Time-Scales: Implications to Their Origin.- Electrodynamics of the EUV/X-ray Bright Point and Filamentary Flux Loop Complexes.- Peculiar Solar Flares and Plages of Possible Interest for the Study of Electric Quadrupole Lines of Na I and Mg II.- Band Structure of the Solar System: An Objective Test of the Grouping of Planets and Satellites.- The Cosmogonic Shadow Effect.- The Role of Magneto-hydrodynamics in Heliospheric Space Plasma Physics Research.- Alfv¿Waves in a Space Plasma and Its Role in the Solar Wind Interaction with Comets.- Modeling a Cometary Nucleus.- Filamentation of Volcanic Plumes on the Jovian Satellite Io.- In Situ Acceleration and Gradients of Charged Particles in the Outer Solar System Observed by the Voyager Spacecraft.- Interaction of Interstellar Pick-Up Ions with the Solar Wind.- The Even-Odd Systematics in R-Process Nuclide Abundances.- The Solubility Problem of Heavy Elements in Internal Stellar Plasma Revisited.- Electron Heating in Superhigh Mach Number Shocks.- ¿Dead¿ Pulsars: Cosmic-Ray Sources.- The Effects of Mutual Irradiation on the Observed Radial Velocity of the Components of Close Binary Systems.- Magnetic Confinement of Cosmic Clouds.- Mass Pick-Up in Astronomical Flows.- Infrared Emission from Interstellar Plasma.- On the Fluctuations of the Surface Brightness of Galaxies.- On the Dynamics of the Metagalaxy.- Tearing Down Disciplinary Barriers.