Nasa simulates 'inevitable' asteroid hitting LA in bid to prepare for real emergencies

The possibility of a catastrophic asteroid on course to slam into Earth is extremely rare – but, experts say it's just a matter of time before this threat becomes a reality. To prepare for such an event, NASA has teamed up with the Federal Emergency Management Agency for a series of exercises intended to simulate an asteroid emergency. In the most recent exercise, the experts prepared for a hypothetical object 300-800 feet wide approaching far too quickly to be redirected, necessitating a mass evacuation of the metropolitan Los Angeles area with 100 percent chance of impact. The possibility of a catastrophic asteroid on course to slam into Earth is extremely rare, but experts say it's just a matter of time before the threat becomes a reality. To prepare for such an event, NASA teamed up with the Federal Emergency Management Agency.