What Would Happen If Every Single Person in the World Pointed a Laser Pointer at the Moon?

XKCD's hilarious 'What if?' series answers another farfetched question as only they can. The question: If every person on Earth aimed a laser pointer at the Moon at the same time, would it change colour? The simple answer: not if it's a regular laser. But if the lasers were stronger... we might just die. Read More >>


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