TY - RPRT TI - NEXT Ion Propulsion System Risk Mitigation Tests in Support of the Double Asteroid Redirection Test Mission AU - Thomas, Robert E. AU - Patterson, Michael J. AU - Crofton, Mark W. AU - John, Jeremy W. PY - 2019 UR - https://ntrs.nasa.gov/citations/20190032575 ID - 20190032575 ER -