![]() ![]() ![]() At most, accretion heating around the black hole from matter falling in will release the energy of a regular meteor impact punching through the atmosphere and planet. Because the black hole grains a very small amount of mass while flying through earth (again, these things are smaller than an atom) they don't really slow down and will escape back off to the universe. If it falls from basically infinitely far away it's guaranteed to be going as fast as escape velocity (or greater, if it had any kinetic energy at all while really far away). Your teacher's comment about a black hole just oscillating around inside the earth is on the right track, but that depends on the black hole's speed. This interest (in black holes as dark matter) is why this problem is so well studied. These 'primordial' black holes are a popular dark matter candidate and could be orbiting the galaxy in hilariously huge numbers, but are really hard to constrain since they're so small. So basically, anything bigger than the earth will be a bad time even long after the black hole is gone, and I'm going to restrict my answer to very low mass (much less than a solar mass) black holes.īlack holes smaller than atoms with masses comparable to asteroids may have formed in huge numbers shortly after the big bang. If something like this careened through the solar system and struck the earth it would give a really serious tug to the moon even without striking it. The answer depends on two things- the mass of the black hole and the speed.Ī black hole with a mass as great as earth would be about the size of a nickel. This is weirdly enough exactly in my area.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |