[extropy-chat] 1908 asteroid

[Al Brooks]

this link theorizes the 1908 asteroid explosion over
Siberia was
approximately 500 kilotons, i.e. equivalent to large
hydrogen bomb. The article reassuringly states that
such an asteroid 'impact', about six kilometers up in
the atmosphere, might occur over a populated area
every 3600 years.
http://www.psi.edu/projects/siberia/siberia.html



		
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