[meteorite-list] NASA finds extra-terrestrial amino-acids in Sudan meteor...

[GeoZay at aol.com]

>>After all it did hold probably most  of it's cosmic velocity, meaning it 
was incandescent for just a few seconds  at most, right? Even when you 
consider iron conducts heat much faster and  more efficiently than stone, 
could such a large mass heat all the way to the  core in just a couple 
few seconds?<<

I wouldn't think so. As  the outside of a meteoroid is melted upon 
atmospheric entry, melted material is  constantly being sloughed off along with the 
heat that caused the  melting. As the melted material sloughs, it exposes 
fresh  material that is still frozen. This process continues until the 
meteoroid hits  the ground, burns up completely or slows sufficiently  til it no 
longer  causes incandescence and begins to air cool. 
GeoZay