If Earth encountered a microscopic black hole wouldn't it just move to the center of the Earth?

Question

I've heard a lot about the possibility of a microscopic black hole being created by the CERN LRC. If this did happen, the small black hole would have little mass so it would be attracted by the Earth, as it consumed any matter in its path it would basically drill down until it was in gravitational equilibrium at the Earth's center. Only a very small amount of matter could be consumed at any one time even if it continued to flow towards the black hole due to the extremely small event horizon so it would take a very, very long time to have any noticable effect.

I'm not convinced it would be the end of the Earth for these reasons. Is there evidence it would be the end? How long would it take to consume the Earth as the event horizon grew?

Answer 1

No, the black hole isn't going to have a chance to go into the center of the Earth.

Hawking radiation will cause the black hole to evaporate in less than a thousandth of a second. Second, the black hole isn't going to be sucking anything in because it only has the mass of a couple hundred protons. That isn't enough to suck in an atom, much less suck up a hole to the center of the Earth.

How many times need I say it? The world is not going to be affected by the black holes the LHC creates because they will evaporate extremely fast, and they don't have enough mass to do anything.

Answer 2

no.

1. the LHC wont possibly create a black hole. it would have to multiply its maximum power output by over a quadrillion, i would hope you realize thats quite impossible.

2. any micro black hole would evaporate away almost instantly.

Answer 3

To Doctor J:  "extremely condensed mass" is not the same as "immense mass".  The LRC, if it produces black holes at all, will produce them with the mass of a large atom.   This is a very tiny mass, but it will be extremely condensed.   The gravity of such a black hole will be the same as the gravity of an atom -- that is, almost zero.  The electric charge on the BH will be enough to repel other atoms.

Answer 4

I find this issue confusing.  My meager understanding of black holes is that they exist because of extremely condensed mass, therefore, even a microscropic one would have immense mass.  This mass would gravitationally consume the Earth - not the other way around.