NASA's DART spacecraft successfully altered the orbit of an asteroid

The next time an asteroid threatens Earth, humanity might have a chance of saving the planet. On Tuesday, NASA announced that its experimental Double Asteroid Redirection Test successfully altered the orbit of Dimorphos. Following two weeks of data collection and analysis, the agency found that DART's impact shortened the asteroid's orbit around its parent, Didymos, by 32 minutes. Before the September 26th collision, NASA estimated DART needed to change the orbital period of Dimorphos by 73 seconds or more to call the test a success. The spacecraft beat that benchmark by more than 25 times.