NASA to deflect asteroid in test of 'planetary defense' - Phys.org

NASA to deflect asteroid in test of 'planetary defense'  Phys.orgNASA to intentionally crash spacecraft into asteroid  ReutersNASA will launch its 1st asteroid-defense mission this month  Space.comPlanetary Defense Coordination Office (PDCO)  NASALIVE: NASA speaks ahead of rocket launch for asteroid defense test  Reuters