Falls Black
What happens if a foreign object falls into a black hole?
What happens if a foreign object falls into a black hole? If possible, please write a long and complicated answer.
The answer depends on where the observer is. Lets take two cases, one the observer is far away and in the second case the observer is on the "foreign object".
Black holes have something called an "event horizon" - this the place of no return. Nothing can escape once inside the event horizon.
For an external observer, an object gets hotter and hotter as it approaches the event horizon. A significant fraction of it mass can be radiated away as it falls in (up to 10%, I think). But the thing is the object continues to approach the event horizon, but never makes it.
Now for an observer on the object, nothing special happens at the event horizon. He just passes through (in a definite time). But as he approaches the black hole, the tidal forces become really strong and he is stretched to the breaking point (as is everything else). But he approaches the (classical) singularity in a finite time. Most physicists believe that the singularity is a symptom that general relativity is breaking down and a truly quantum description of gravity is needed near the singularity - unfortunately we don't really have a quantum theory of gravity yet.
This is true for "ordinary black holes" but some believe the equations allow of something truly spectacular - a naked singularity - but that is speculation at this time.