Professor Meyer’s research specialty is applying high signal-to-noise spectroscopy to the study of cosmology, galactic evolution, and the interstellar medium (ISM). He is conducting sensitive measurements of the interstellar and extragalactic absorption lines in the spectra of stars and quasars. Such measurements provide important information about the composition, chemistry, kinematics, and physical conditions of intervening gas clouds in the Milky Way and other galaxies. Through HST, FUSE, and KPNO observations of interstellar absorption lines toward high-velocity stars, binary stars, open star clusters, globular star clusters, and galaxies, Prof. Meyer is also investigating the physical conditions and geometries of small-scale structures in a wide variety of diffuse clouds.