content: the only thing I didn't agree with was if a micro black hole collided with a planet like earth it would just pass through. I believe if one would be to hit and go into the earth the blackhole would quickly grow by leeching mass as it passed through grabbing more and more as it went and also increasing it's gravity allowing it to grow faster still. Just seems to make sense. Of course if it was traveling at a fraction of lightspeed then I believe it would pass through but grow in the process but not enough to swallow the planet eventually as in a slow one passing through and coming out the other side the size of a locomotive and the mass of a city.