Which asteroid destroyed the Earth?

What was the last asteroid to hit Earth? The last known impact of an object of 10 km (6 mi) or more in diameter was at the Cretaceous–Paleogene extinction event 66 million years ago. How big was asteroid that killed dinosaurs? The asteroid was about 7.5 miles (12 kilometers) in diameter and was traveling about …

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How big of an asteroid would it take to destroy the Earth?

NASA scientists say it would take an asteroid 60 miles (96 kilometer) wide to totally wipe out life on Earth. How big would an asteroid have to be to cause extinction? Ultimately, scientists estimate that an asteroid would have to be about 96 km (60 miles) wide to completely and utterly wipe out life on …

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