In this episode, we compare the impact of the sizes of asteroids from 1m to 1000km large, how often they occurred and what are the results. Including the Chelyabinsk Meteor, the Tunguska Meteorite airburst and the KT Extinction Event (bye-bye dinosaurs) Chicxulub Asteroid.
Following the fly-by of 2014BL86 on Monday, behold:
A lightness-reversed cropped plot of orbits of all the known Potentially Hazardous Asteroids (PHAs), numbering over 1,400 as of early 2013. These are the asteroids considered hazardous because they are fairly large (at least 460 feet or 140 meters in size), and because they follow orbits that pass close to the Earth’s orbit (within 4.7 million miles or 7.5 million kilometers).
It’s very busy out there.