Big asteroids hit Earth more frequently than thought, study suggests

Apr 23, 2020
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Currently it's thought that an asteroid 1-km or larger hits the Earth on average every 650,000 years. The new study, if correct, suggests this size asteroid hits the Earth somewhat more often, on average every 250,000 years. That's a risk of 1:25,000 per century, or roughly a human lifetime. I'm not going to lose any sleep tonight ... at least not from this.

I suspect that extinction from an anthropogenic process or event is orders of magnitude more likely. In fact, even the next extinction-size asteroid to threaten Earth is more likely to be human-induced, either accidentally or intentional.

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