Thomas Davison

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The ancient landscape at Yarrabubba preserves traces of the world’s oldest known asteroid impact. Shutterstock

We found the world’s oldest asteroid strike in Western Australia. It might have triggered a global thaw

Aaron J. Cavosie, Curtin University; Chris Kirkland, Curtin University; Nick Timms, Curtin University; Thomas Davison, Imperial College London, and Timmons Erickson, Curtin University

The Yarrabubba asteroid landed 2.2 billion years ago. Around the same time, the icy Earth went through a big thaw.

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