The Asteroids Big Enough to Wipe Out All Life

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Let's face it: The Earth is going to get hit by an asteroid someday. But how bad that'll be depends entirely how big it is. So how big would that space rock have to be to wipe us all out? Let's break it down, from the likeliest culprits to the hypothetical super-asteroids, and what we can do to hopefully not die.

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Sources: https://docs.google.com/document/d/e/2PACX-1vRz7wKG0JAh2lYbgTltN4B8Pk_7ac3V6XKbQUPxY6lGjolxi5F9Xvzna9skQ3G_YDrCxBgQktaDqwqZ/pub Receive SMS online on sms24.me

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