For most of us a blackhole exists only in a Sci-fi flick.  In real life they cannot be seen, but astronomers see evidence of their existence.  In fact they actually see evidence of millions of them.  You could never actually enter a black hole and live, but scientist are using computers to simulate what would happen if you could.  You would feel waves of force pulling you in as you are stretched through spaghettification, a process that makes everythin stretched thin because the force of gravity on your feet is so much greater than your head.

Everything, even light is pulled toward the center of the black hole and nothing gets out.  The scientist say that it is like falling off a waterfall into space.  Everything inside the black hole is torn apart.  Fortunately we do not have to worry about ever falling into a black hole.  While the sun is only 8 light minutes away, the nearest black hole is 3,000 light years away.  That means that if you are traveling at the speed of light it would take you 3,000 years to get there.  Even our fastes rockets do not approach light speed.  We are at a very, very safe distance.