Black Hole revealed ...

Have you ever heard of Black Hole? Yes, no? Scientifically, a Black Hole is defined as a region of space where the gravitational field strength is extremely strong ( particularly at the center) when no mass, or even electromagnetic waves can escape from its inward pulling force once they have entered into the Black Hole's boundary. Put into a simpler word, Black Hole is compared to a gigantic "vacuum cleaner machine" when it sucks in everything that comes closer to its vacuum probe.

The existence of Black Hole may be derived from certain theories. Some of these theories are rather logical while some may still be debatable up till today. First, according to the General Theory of Relativity, Black Hole exists when a large amount of mass is present is a equally in a small region of space, all the paths leading through the space will be concentrated toward the its center of volume, preventing all matter and radiation from escaping. Still this theory is not convincing when Quantum Mechanics is applied. Why? As the Theory of Relativity claims Black Hole to be a region of empty space with a point like singularity at its center and boundary at its edges, further researches have revealed that Black Hole actually will not hold any matter forever, but may leak slowly in the form of thermal radiation which is known as Hawking's Radiation. A Black Hole is said to have a finite life too. Strange enough?

You may ask what happen to us when we enter a Black Hole? As far as we are concerned, an object in any very strong gravitational field will experience a tidal force stretching it in the direction of the object generating the gravitational field. A phenomenon termed as Spaghettification will occur when one is approaching the Black Hole. Imagine an object which fall into Black Hole is split into two, and the two pieces will split into four, eight, sixteen and this process continue until the original object is split into the size in the magnitudes of an atom! At the end of the process, the object is just a string of elementary particles. So, is "B ermuda Triangle " part of the Black Hole?

So much facts on Black Hole, so what actually creates a Black Hole? Introducing another phenomenon, the Gravitational Collapse - Occurs when an object's internal pressure is insufficient to resist the object's own gravity. In outer space, a star may experience Gravitational Collapse when its temperature is no longer high enough to prevent it from collapsing under its own weight, most probably due to insufficient "fuel" in the star when it is approaching its end of life, or maybe the star has been hit by matters which do not increase its core temperature. The collapse may be halted by the degeneracy pressure of the star's constituents, condensing the matter in an exotic density. This will produce different types of compact stars. The type of compact star which will be formed depends on the mass of the remnant - the matter left over after changes triggered by the collapse.

If the mass of the remnant to exceed 3-4 solar masses, either because the original star was very heavy or because the remnant collected additional mass through accretion of matter, there is a high probablity the degeneracy pressure of neutrons is insufficient to stop the collapse. If this collapse is managed to be stopped by a mechanism (it is still unknown and inexplainable till today), then a Black Hole will be born ...

I believe all of you will have a general idea of

Black Hole after reading this post.

My information wasn't sufficient,

so if anyone of you have different opinions on this topic,

feel free to share with me.

We can do brain-storming together.

This is a picture of man-made miniature Black Hole

I captured it when I visited the

National Planetarium Centre last month

Till then,

KeithK :)