Monday, June 30 marks the 100th anniversary of the Tunguska incident in 1908, in which a meteor or comet fragment entered the atmosphere over Tunguska in Siberia producing an enormous explosion.They close with this happy thought:
Impacts such as the Tunguska incident are thought to occur about once in one hundred years based on the density of impact craters on the MoonOh good. Like I wasn't paranoid enough.
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