Online calculator now works out with an asteroid impact

The website's algorithms then calculate what the effects of the asteroid's impact would be on the Earth's axis, whether there would be a fireball and what chance of surviving any bystanders would have. It can even tell one you how far one should be from the impact to avoid being buried in the material thrown up from any crater that is left behind.

An international team from Purdue University in U.S. and Imperial College London has created the online 'Impact Earth! calculator where users can type in size of their hypothetical asteroid, its speed, what it will hit, its angle of entry and even how far they are from the blast. And, for those who cannot visualize how big their asteroid should be, there is even a helpful drop-down menu of pre-set sizes which include "school bus", "humpback whale", "Empire State Building."