The space rock is a 470-million-year-old fossil meteorite first spotted three years ago by workers at Sweden's Thorsberg quarry, where stonecutters have an expert eye for extraterrestrial objects. Quarriers have plucked 101 fossil meteorites from the pit's ancient pink limestone in the last two decades.
Researchers have nicknamed the new meteorite the "mysterious object" until its formal name is approved, said lead study author Birger Schmitz, of Lund University in Sweden and Chicago's Field Museum. It will likely be named for a nearby church, the Österplana, he said.
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