Prof‭. ‬Goodman is broadly interested in theoretical astrophysics‭,‬ especially astrophysical fluid dynamics and magnetohydrodynamics‭,‬ preferring analytic or semianalytic to fully numerical work‭.‬ Favorite applications include accretion disks of protostars and QSOs‭,‬ tides in stars and extrasolar planets‭, ‬planetesimal formation‭, ‬and gamma-ray bursts‭. ‬For his Ph.D‭. ‬and several years thereafter‭, ‬he specialized in the N-body dynamics of dense stellar systems‭.‬ Prof‭. ‬Goodman is associated as a theorist with experimental efforts at the Princeton Plasma Physics Laboratory to study hydrodynamic and MHD instabilities relevant to astrophysics‭