The 33-pound rock, something of a family heirloom, was found in a cow pasture near Tazewell, Tenn., in the 1930s by Donna Lewis' grandfather, the late Tilmon Brooks.

The object of curiosity, which long served as a doorstop and a garden ornament and had even been painted green, turns out to be a very rare and very real meteorite, possibly 4.5 billion years old.

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The university has since purchased the meteorite, the remains of a meteor that fell to Earth, from the family. The former doorstop ...
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