July 19, 2019 
June 30, 2019 The DART Mission is being developed under the auspices of NASA's Planetary Defense Coordination Office. NASA established this office to coordinate planetary defense related activities across NASA, and coordinate both US interagency and international efforts and projects to address and plan responses to the Near-Earth Object impact hazard.
DART Mission Overview
JHU Applied Physics Laboratory | Published on Dec 17, 2018
About DART
NASA's DART mission will be the first ever space mission to demonstrate asteroid deflection by a kinetic impactor. In Fall of 2022, DART is planned to intercept the secondary member of the Didymos system, a binary Near-Earth Asteroid system with characteristics of great interest to NASA's overall planetary defense efforts.