Quote:
Originally Posted by TLAM Strike
True, in fact IIRC there is an impact of the destructive power of 1 kt per year somewhere on the Earth. Most of the time it hits the ocean or an uninhabited region of the planet's landmass.
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Here's a 1 kt airburst. of 20 ft diameter iceball.
Cool calculator.
http://www.lpl.arizona.edu/impacteffects/