| Posted: 21 May 2018 at 8:34am | IP Logged | 7
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This doesn't strictly belong in any of the categories named in the thread title, but I couldn't really think of anywhere to put it.
Fragment of a meteor that fell in what is now Argentina about 5,000 years ago. Estimated to be something on the order of 5 BILLION years old, which is older than the Earth. Yes, this is literally older than dirt! On a scale, clocks in at 18 pounds, but feels MUCH heavier. Nearly solid iron. I suspect there's some kind of mass/inertia thing happening.
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