Astrophysicists are examining the possibility for a rather dramatic explanation for the enigmatic Dark Matter thought to comprise a significant fraction of the mass of the universe. While the leading idea for Dark Matter is a WIMP – Weakly Interacting Massive Particle – the particles being sought here make WIMPS look like sissy’s:
These collisions would not destroy the black hole or the star. Although their characteristics are uncertain, Kesden and Hanasoge’s simulations posit that primordial black holes could have masses of 1018 kilograms (a million trillion kilograms, about the mass of a largish asteroid), which is too small to destroy a star as they pass through. “The black hole is like a very dense bullet passing through the Sun, which is like a fluffy feather pillow,” says Kesden.
Would a black hole with the mass of a mountain moving through the earth (Or a human body) be noticeable? I have no idea, but it sure seems like it should.