NASA preparing planetary defense system to save earth from asteroid collisions

On June 4th Earth had a close encounter with an asteroid traveling at a speed of 22,284 kmph, the chances of it hitting the Earth were quite low and it missed the earth by 2.1 million km, still not a very large unit in terms of astronomical measurement.

But the threat of an asteroid collision is always on our mind, so NASA and ESA (European Space Agency) are working together to build a planetary defense mechanism to save earth from asteroid collisions.

They are currently working on a spacecraft that can hit away these space bodies and will change their trajectories away from earth. Earlier this month NASA demonstrated DART(Double Asteroid Redirection Technique), a planetary defense technique.