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Re: Hell Creek (long)



>>However, the atmospheric density only becomes really substantial below
roughly about 40,000 feet (approximately one diameter for a K/T type
impactor), so that travel time becomes about 8.75/30=0.3 seconds,
loosely. <<

Oops.  I was too quick with my calculator finger. 40,000 feet is 7.57
miles, so 0.25 seconds, loosely, rather than 0.3.