This is a $3,001,728.38 grant awarded by the National Aeronautics and Space Administration (NASA) Shared Services Center to The Trustees of Princeton University Office of Research and Project Administration, doing business as Princeton University. The grant covers research efforts related to the Interstellar Boundary Explorer (IBEX) mission, including providing principal investigator leadership, managing the Princeton science effort, data analysis and publications, and supporting the overall IBEX science team. The period of performance is from November 1, 2017 to March 31, 2020. No set-aside designation was specified for this contract.