Our beloved blue planet gets pelted with debris from space all the time but, since most of it burns up or break apart in the atmosphere, it’s usually not a problem. Even when one does make it to the ground, they are rarely much larger than a small rock, minimizing the damage they’re capable of inflicting. Then, of course, there is that once-in-an-eon occasion where something very very large makes it through intact, and this can really do some damage. Fortunately, such hits are extremely rare, but they are worth noting, if only to serve as reminders of the power of the stars to undo the normal routine here on Earth, with little more than a few minutes’ warning. So where - and when - did these monsters hit? Let’s take a look at the geological records...
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