AdvertisementMove over, Bruce Willis: NASA crashed into an asteroid to test planetary defenseUpdated September 26, 2022Nell GreenfieldboycefacebookEmailThis illustration shows the DART spacecraft approaching the two asteroids, Didymos and Dimorphos, with a small observing spacecraft nearby. (Credit: NASA/Johns Hopkins APL/Steve Gribben)This article was originally published on September 26, 2022.