As we all know, huge number of asteroids are already hovering around our Blue Planet and there is always certainty that one or more of them may hit Earth someday. But, even if one of them hit Earth in near future that will not mark the extinction of humans from the planet.
Lindley Johnson, the Planetary Defence Officer for the National Aeronautics and Space Administration stated in the recently published book ‘End Times’ and wrote, "In the order of things people should be worried about, Near Earth Objects isn’t highest on the list’’.
"But it does have the potential to be the most devastating natural disaster known to man’’.
It is also known to the scientist that 800,000 years ago, a one-kilometre long asteroid crashed into Southeast Asia which our ancestors had already survived.
However, it is still a matter of study how the humans at that time survived such huge impact. It may be because humans are much smarter than dinosaurs gave them a edge when it comes to surviving asteroid attack.
NASA is currently working on its Double Asteroid Redirection Test (DART) Mission to defend the planet against ny extinction level asteroids that might come its way.