Earth's Oldest Impact Crater Is Now Confirmed at 3 Billion Years

Earth's oldest known impact crater sits in the Pilbara region of Western Australia.

New crystal dating puts it at about 3.024 billion years old, an Archean-age scar.

It beats the previous record-holder, Yarrabubba, by roughly 800 million years.

Shatter cones and shocked zircon crystals are the smoking-gun evidence of a hypervelocity strike.

The exact age and crater size were fiercely debated before the latest study settled the timeline.

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