Odds are, it wouldn't crash "into" Earth. Rather, it would more likely crash "through" Earth. Difference seems subtle, until you find out that a black hole (on

Odds are, it wouldn't crash "into" Earth. Rather, it would more likely crash "through" Earth. Difference seems subtle, until you find out that a black hole (one made by us at least) is soooo tiny that it would miss most of the atoms in the Earth, falling _between_ them. Apparently, you need lots of mass to make a black hole that is both sustainable and big enough to affect anything around it.