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Life on Mars was possible after last great meteorite impact nearly 4.5 billion years ago

Atom probe tomograph from a martian zircon. Each dot is an atom. Pink are Lithium impurities. If it had been bombarded it would be full of clustered atoms. Instead it shows no signs of heating , has stayed cool for 4.4 billion years. For more information, please visit https://mediarelations.uwo.ca/2019/06/24/life-on-mars/ Uploaded by: Communications and Public Affairs (MH)
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