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38 votes
7 answers
8k views

How fast a (relatively) small black hole will consume the Earth?

This question appeared quite a time ago and was inspired, of course, by all the fuss around "LHC will destroy the Earth". Consider a small black hole, that is somehow got inside the Earth. Under "...
Kostya's user avatar
  • 20.2k
7 votes
2 answers
3k views

What would the effect be of a small black hole colliding with the earth?

If a small black hole (say about .1 mm radius or 1% of Earth's mass) came flying along at the speed of a comet or higher and impacted the earth, what would happen? Would it pass through the earth (and ...
xpda's user avatar
  • 846
7 votes
4 answers
5k views

If there was a black hole on earth, what would it look like?

If an answer does exist, I'd love to hear it. I'm trying to incorporate a doomed earth story in something I'm writing, and the end of the world I'm going for is a black hole. Let's say the black hole ...
markovchain's user avatar
  • 1,511
29 votes
3 answers
2k views

What would happen if somebody dropped a small black hole into the Earth?

Suppose we drop a small black hole, but large enough that it accumulates mass more quickly than it radiates it, into the Earth. What happens? This question has already been asked here and here, but ...
Peter Shor 's user avatar
2 votes
4 answers
3k views

What would happen to the Moon if Earth is turned into a black hole? [duplicate]

Assume that all of sudden the Earth is turned into a black hole. And the moon revolves around the Earth (before turning into a black hole). What would happen to the Moon after earth changes to black ...
Hash's user avatar
  • 598
1 vote
1 answer
209 views

Would a mini-blackhole collision with Earth cause heating? [duplicate]

Let's forget about the probability of this event. I am a mad scientist on the Moon, I created a micro black hole of the diameter $r=0.5cm$. I have to be fast before it evaporates due to Hawking ...
Neinstein's user avatar
  • 284
1 vote
1 answer
353 views

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?
T.Davis's user avatar
  • 13