Applications of magnetohydrodynamics and plasma physics to astrophysical problems. Topics emphasized will be the physics of collisionless shock waves, both non-relativistic and relativistic, with application to supernova remnants, nebulae, and jets driven by outflows from compact objects, galaxy clusters, and cosmic rays. Reconnection, including structure and instability of current sheets, with application to flaring behavior in the Earth's magnetosphere, the Sun, and compact objects. Turbulence in magnetized plasmas, including intermittency and current sheet formation, with application to the solar wind, accretion disks, and molecular clouds.