What are black holes???

Hello every one.This is Bharath kumar and this is my first post in the blog.
           Today,Lets know something about black hole.

Q: What is a black hole?? Ans:: Black hole is a dark blackish matter present in the space.It is considered as Vacuum cleaner of the universe because it swallows all the matter near to it by it's high gravitational pull.It's gravity is so high that even a light ray cannot escape from it.The very first experiment about black holes was done by Stephen Hawking.

Black hole

Q: How is this block hole formed in the space??Ans: Black hole takes it's origin after the death of a Star.(i.e When star stops burning).It is said that even our star will become a black hole(But it takes nearly 6 billion years to Become a black hole)

Q:What are the stages of a star to convert into a Black hole??

Ans: The very first stage of a star to it's way to black hole  is Red giant stage.The nuclear fuel in the Star gets sinked.The star forms into a huge red mass called as Red giant.

Red giant

White dwarf

When a star completely spends it's nuclear fuel it converts it white dwarf stage.During this stage the star looks in bright white colour.It's mass will be half of the mass of the star.The nearest white dwarf to the earth is Sirius B.In this stage the star starts cooling down.

                        

Neutron Star

After this white dwarf stage,the star completely degrades and it may form as Neutron star or diectly as Black hole.Sometimes Even supernova occurs and the star explodes and form neutron star or a black hole

Stay Tuned for more updates About the Black holes.And if you have any doubt,Feel free to comment...

                                                                                              -Bharath Kumar