JS> density variations in the crust.  There is a place in the indian ocean
JS> where satellites take a dip in their orbit because of a major density  
JS> difference in the crust.                                               
That is quite interesting.  I'd never heard that before.
JS> Density was just a way of combining mass with frontal or swept area.
Yep.  That's what Dave said too.  It's scary that you two are
beginning to think alike.  ;)
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