NASA has a new plan to protect Earth from Asteroids, including a '1000-strong' space army

Nasa has unveiled a plan to defend Earth from potential "planet killer" asteroids. The strategy includes sending spacecraft armies to intercept or deflect them. In extreme cases, Nasa might use nuclear devices. A successful test, DART mission, proved the effectiveness of redirecting hazardous asteroids. These measures aim to prevent catastrophic impacts similar to the Chicxulub event.