@wellerstein Also, how can Russian #meteor be 500kt (v. Hiroshima 15kt) and yet cause comparatively so little damage?
Replying to @AriBRubin
@AriBRubin Aside from fact that physics of the explosion probably not identical, the meteor broke up super high up – like 15-30 mi up.
11:42 AM - 17 Feb 2013
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