NASA has activated the Planetary Defense Coordination Office (PDCO), its program for the detection and tracking of space objects belonging to the NEO (Near-Earth Object) category, meaning the type whose orbit is close to that of Earth. This office is part of the agency’s Planetary Science Division, will be responsible for coordinating all projects connected to NEO-type asteroids and comets and will have a leading role in coordinating efforts with other agencies and governments about potential impact threats.