Giant space ‘boulders’ unleashed by NASA’s DART mission aren’t behaving as expected, revealing hidden risks of deflecting asteroids Live ScienceNASA’s asteroid-crash Earth defense tactic has a complication — DART ejected large boulders into space SpaceDeflecting Asteroids Isn’t Simple According to New Data from DART Universe Today“Something Unknown Is At Work Here”: Unexpected Results From NASA Mission To Deflect Asteroid IFLScienceDART’s hit on asteroid creates new danger Universe Space Tech