Mercury research in CEPS centers on the study of tectonic features and how they relate to Mercury's geologic past. Understanding these features requires precise topographic information. New topographic data for Mercury is being generated at CEPS using digital stereo techniques, yielding digital terrain models. A planetary mission called MESSENGER provides global coverage in image and other types of data. CEPS scientist Tom Watters is a participant in the Geology Group of the MESSENGER Science Team and is involved in the mission's outreach efforts.