NASA’s ‘DART’ Mission Succeeds In Changing Asteroid’s Orbit

NASA’s “DART” mission proved to be a success after the spacecraft slammed into an asteroid and shortened its orbit even more than anticipated. NBC News’ Tom Costello shares more on the major accomplishment. » Subscribe to NBC News: » Watch more NBC video: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! NBC News App: Breaking News Alerts: Visit : Find NBC News on Facebook: Follow NBC News on Twitter: #NBCNews #NASA #Asteroid