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The Oldest Known Asteroid Impact Crater, “Yarrabubba Crater,” May Have Been Discovered In Australia. The Impact, Dated To 2.229 Byr, Possibly Ended The Snow Ball Earth Glacial Condition Via Water Vapour, A Green House Gas, Hurtled Into The Atmosphere. Another Implication Of This Discovery Is That Other Older Craters May Still Exist.

https://www.foxnews.com/science/earths-oldest-asteroid-strike-snowball-earth

Researchers have discovered the Earth’s oldest asteroid impact crater, a 2.2 billion-year-old strike found in Western Australia. The space rock may have also ended a massive ice age that radically altered the planet’s climate, known as “Snowball Earth.”