We are going to explore some new world, but in this case we are literally going to crash a spaceship into an asteroid and change the direction and speed at which it moves through space, and we are doing that to basically test the technique to save the planet if there was ever a killer asteroid coming towards earth. nasa is targeting a small asteroid called dimorphos, which is orbiting around a larger space rock. the spacecraft travelling at around 13,000 mph will fly into into the small asteroid leaving an impact crater up to 20 metres wide. but this should also give the rock a kick, which wil...