Scientists date the world's oldest meteor crater in western Australia, formed 2.229 billion years ago
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New research suggests a crater was formed 2.229 billion years ago due to a meteor strike and is the world's oldest known impact site. The study marks the first time that the Yarrabubba crater has been precisely dated and it is 200 million years older than any similar site known on Earth. Determining a crater's age is very difficult and complex as the sites tend to be poorly preserved due to erosion and tectonic events.