Protecting our world from the threat of asteroids and comets is a core enterprise at the Society, one that our members and supporters care deeply about. Chief scientist Bruce Betts will review our recent efforts and successes. Bruce and Planetary Radio host Mat Kaplan will also welcome Nancy Chabot, planetary scientist at the Johns Hopkins University Applied Physics Lab. Nancy is the coordination lead for NASA's Double Asteroid Redirection Test or DART. The DART spacecraft will slam into small asteroid Dimorphos on September 26, 2022. It will be humanity's first test of asteroid deflection.