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The ones we found on the nullabour years ago were shaped similar to buttons called ablated tektites. Apparently they don't spin or rotate much as they enter the atmosphere & they end up looking like a little Apollo re-entry vehicle....the re-entry face ends up domed. They come in slower as there's a fair bit of atmospheric drag.
Last edited by asimov; 04-12-2005 at 09:06 PM.
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