World’s largest asteroid impact site may be buried in Australia, and it’s huge

Plus: The latest study on how ‘dimming the sun’ could prevent ice sheet melting 🤯 Scientists have discovered evidence of the world's largest known asteroid strike beneath the Australian outback. Spanning an enormous 520 km, the colossal impact structure, is buried deep under New South Wales. The newly unveiled Deniliquin impact structure confirms Australia's status as a repeated target for ancient asteroid strikes, with 38 confirmed and 43 potential craters scattered across the continent. Some visible remnants endure, but many lie concealed apart from magnetic traces etched into local seismic data. We share the story of the latest discovery in [today's Must Read.]( Good morning. I’m Tim, Newsletter Editor at IE. This is the Blueprint. What else has hit the headlines today? 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These rings and a central 'dome' resemble those found at known impact sites and point to an event over 300km wide, potentially the largest on Earth. Radial fracture patterns also back the asteroid impact theory, but only drilling and dating core samples can provide definitive proof of this giant impact in Australia's distant past. Unlocking the precise age of this dramatic event may help determine the origins of ancient ice ages and mass extinctions, and how its lasting influence shaped the Earth’s history across vast timescales. 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