The physics of interstellar space - the gas, dust, electromagnetic radiation, cosmic rays, and magnetic fields - present between the stars in a galaxy and between galaxies. Star formation, the interaction of light and matter, and the physical processes that determine the properties, dynamics, and behavior of the interstellar medium.
The physics of interstellar space - the gas, dust, electromagnetic radiation, cosmic rays, and magnetic fields - present between the stars in a galaxy and between galaxies. Star formation, the interaction of light and matter, and the physical processes that determine the properties, dynamics, and behavior of the interstellar medium.