We discuss some of the major areas in astronomy and cosmology where plasma
physics is important: (1) origin of stars; (2) distortions of the microwave
background radiation; (3) expansion rate of the Early Universe; (4) the ma
gnetic fields and relativistic electrons in jets; (5) the collimation of je
ts; (6) the origin of stellar winds; (7) the origin of filaments and clouds
not gravitationally bound; and (8) the origin of cosmic rays.