These massive asteroids hit Earth; check out the size and carnage caused

tech.hindustantimes.com:

The planet Earth has been around for more than 4.5 billion years. And in the course of its history it has been hit by asteroids at least 190 times. But there were three particular occasions when the asteroid was so large and the impact crater it created was so wide, scientists are sure it would have ended humanity! And yes, one of them is the same giant asteroid that made the dinosaurs go extinct. But interestingly, it is not the first in the list of 3 largest asteroids to hit Earth. So let us check out these three life-ending asteroids and the damage they caused.

But before that, let's give you an idea of why these three asteroids or any asteroid that makes it to Earth are so special. In its 4.5 billion years history, Earth has been exposed to hundreds of thousands of asteroids, however, there are only 190 craters discovered so far. Why is that? It is because an asteroid needs to be at least 25m large to make it through our atmosphere, according to NASA. This makes any asteroid that hits the Earth a very rare instance. To be specific, with 190 asteroid hits, the Earth gets one impact crater every 23.6 million years.

Now that we know how rare these events are, it is still incredible to think about the fact that there were three events which, if they were to happen today, could wipe out humans off the face of the planet. But that is what has happened. There are these 3 largest asteroids to hit Earth, as reported by Live Science and one thing to note here is that the actual size of these asteroids cannot be directly calculated since the event happened millions of years ago. Instead, scientists figure out the size of the asteroid based on the size of the impact crater it has left. As logic goes, the larger the crater, the