Goddard's Heterodyne Instrument for Planetary Wind And Composition (HIPWAC) is used at ground-based facilities, often at the NASA Infrared Telescope Facility and the National Astronomical Observatory of Japan Subaru Telescope on the summit of Mauna Kea, Hawaii. With HIPWAC, scientists probe planetary atmospheres for chemical and dynamical information at exceptionally high spectral resolution. HIPWAC has made valuable observations of a variety of solar system bodies, including Mars, Jupiter, Saturn, Titan, Neptune, and Venus.