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Black hole on Earth, 1 foot in diameter [duplicate]
If a black hole 12 inches in diameter were situated (say) 10 metres off the ground, what would happen?
And how long would it take to devour the earth?
user102490
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How destructive would a small black hole be on the surface of the Earth?
Say a black hole with the diameter of around 200 meters or so was formed on the Earth's surface, how much damage would it cause?
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How small the Earth should be for it to become a black hole? [closed]
How small would the earth have to be squashed so that it would become a black hole?
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