Double Asteroid Redirection Test

Asteroid collision with Earth: Scientists ponder over how to tackle such a scenario

Only those asteroids whose orbit around our Sun brings them within 31 million miles of our planet — defined as "near-Earth" — are of interest.

NASA plans to save Earth by knocking asteroid off its orbit

Aiming to show how to protect Earth from a future killer asteroid strike, NASA plans to crash a refrigerator-sized spacecraft at a speed about nine times faster than a bullet into a space rock, forcing it to change its orbit