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NASA identifies oldest known meteor crater on Earth

An international team led by a NASA scientist identified the oldest known meteor crater in Australia, which lends more clues to the formation of the Earth. The study, published Tuesday in the journal

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World's oldest asteroid crater 'could have thawed Ice Age'

Scientists claim the strike in Yarrabubba, in the Outback, happened 2.2 billion years ago and is now the oldest known crater.