If a small star is very dense, it may begin to shrink under the pull of its own gravity. As it shrinks, it becomes denser and denser and its gravity becomes more and more powerful - until it shrinks to a single tiny point of infinite density called singularity. The gravitational pull of a singularity is so immense that it pulls space into a "hole" like a funnel. This is the black hole, which sucks in everything that comes near it with its huge gravitational force - including light which is why it is a "black" hole.
A giant black hole may exists at the centre of our galaxy.
- Do you know what happens inside a black hole?
Nothing that goes into a black hole comes out and there is a point of no return called the event horizon. If you went beyond this, you would be "spaghettified" - stretched long and thin until you were torn apart by the immense gravity.
* Interesting facts!
Do you know how big is a black hole? The singularity at the heart of a black hole is infinitely small. The size of the hole around it depends on how much matter went into forming it. The black hole at the heart of our galaxy may be around the size of the solar system.
We may be able to spot a black hole from the powerful radio signals emitted by stars being nipped to shreds as they are sucked in.
Now, let's watch a documentary on how destructive the black holes can be. Enjoy!
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