What are the theories on black holes?

Question

How do they work?
How are they created?
What makes them so powerful?
Is there a black hole near us or that could be formed near us that we have to worry about?
What happens when you enter a black hole?

Answer 1

This is a very simplified answer.

Black holes are formed from stars. Within any star you have a number of forces at work. Some try to make it smaller, or compress it, while others try to make it bigger.

A star like our sun has these forces in balance, so it is stable. But there are certain types of stars that are not. These are massive stars which are dying. This means that they have burned out all of their fuel (hydrogen). When it dies, the forces trying to make it smaller win, and the star collapses in on itself to a point with no measurable height, length or breadth. This is called a singularity.

Now, even though you can't measure it, or even see it, all of the mass from the original star is still there. All of this mass in such a small space creates massive gravity. So much that any matter near it will be drawn into that same singularity. Even light will get "sucked" into the black hole, hence the name.

Many scientists believe that there is at least one black hole in the center of our galaxy. But if so, it is far enough away for us to be completely safe.

If you were "sucked" into a black hole you would be stretched out into very thin string. This process, as someone has already mentioned, is called spaghettification. As you went further the force would become so strong that it would seperate all the molecules in your body.

Answer 2

To answer your last q.

If you began to get sucked in a blackhole at first your body would stretch, and it would feel good. But then as you got closer your body would split in two pieces, then 4, 6, 8, 10, and so on. It's called Sphagettifaction.As you finally reach the center of the black you will be in thousands of pieces and you will be sucked into the singularity. after that who knows.

Answer 3

there is not an official theory for black holes, because even stephen hawking said that his theory should be corrected with the recent observations of black holes and recent experiments like the one at Long Island gold particle accelerator.

Answer 4

http://en.wikipedia.org/wiki/Black_hole

C. Gravity makes them so powerful
D. Not that we know of, if we really had to "worry" about it, trust me, the news would be all over the place.
E. You die