When a massive asteroid exploded over Chelyabinsk, Russia last year, it was a jarring wake-up call to us all about the dangers of these impacts, but in many cases, the prevailing opinion is that these events are rare. However, according to new research, that asteroid was just one of over two dozen large impacts that our planet has suffered since the year 2000, and it is only by pure luck that we have escaped disaster.
The above video gives a visualization of the research of Peter Brown, a professor at the University of Western Ontario that studies meteors and comets, using data from the Comprehensive Nuclear Test-Ban Treaty Organization. This data came from a network put into place to monitor the atmosphere for 'infrasound' signals due to nuclear weapon tests. Besides three claimed nuclear weapon tests by North Korea, there haven't been any such tests since 1998. However, this infrasound network has picked up 26 different explosions in the atmosphere since August 2000 that can't beRead More »from Asteroid impacts are not as rare as we think, and it’s time to do something about them