Listen as mission experts from NASA’s Double Asteroid Redirection Test (DART) explain how some of the key technologies enabling the DART spacecraft to autonomously navigate to and impact its target asteroid as humanity’s first planetary defense test work. The DART spacecraft is designed to impact the asteroid Dimorphos – which poses no threat to Earth - as a test of technology, and the asteroid system DART will encounter is the perfect testing ground to see if intentionally crashing a spacecraft into an asteroid is an effective way to change its course, should a hazardous asteroid be discovered in the future. For more on DART, visit https://nasa.gov/dart.