
12-29-2009, 11:02 PM
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Approved Member
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Join Date: Nov 2007
Location: Western Australia
Posts: 2,197
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Quote:
Originally Posted by Former_Older
40K feet...over 7 miles. Isn't that the distance to the visible horizon at sea level?
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Apparently it depends...
http://en.wikipedia.org/wiki/Horizon
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