Life Cycle of Stars.

Hello guys!
It's Abhishek!
I'm back with my information over "Blackholes"

Nebula

OK, first..
I'll go with the life cycle of a star..


1)Nebula : A star forms from a nebula.
A nebula is like a cloud of gases ( Mostly hydrogen ) and dust particles..

Nebula

2)Star : From a nebula, a star is born..
An average  star lives for about 7 Lakh to 8 Lakh years. Some stars tend to live a little over a million years.
The life force of a star (or) the fuel of a star is provided by nuclear fusion.

Sirius Dog Star.

3)Red Giant : After a few lakh years of turning into a star, it transforms into a Red Giant.
The size of a red giant can be about 100 times the size of a star.Sometimes, the size ranges to about 50,000 times the size of a star..
Red Giant's are very bright.About thousand to million times brighter than the star itself.

Red Giant

Red Giant

4) Red Dwarf : After a few million years, they turn into Red Dwarfs.. The huge Red Giant's shrink/contract into about 10 times smaller than our average sun..

5)White Dwarf : A white dwarf is hot but extremely small... A white dwarf is extremely dense.. The size of a white dwarf may be about the size of our earth but with a mass equal to that of the sun.

Red Dwarf,Star,Red Giant,Blue-white supergiant.

6)Supernova : Ah! The Supernova.. It's the explosion caused by the death of the stars.. Supernova's are extremely bright and extremely hot... A supernova will destroy a neighbouring solar system..

The remains of a supernova are either a blackhole or a neutron star.

Supernova

7)Neutron Star : Neutron stars are extremely extremely dense. They have the mass which is about 3 times the mass of our sun but with a diameter of about 20 kilometers.Neutron stars are formed after a supernova.
If the mass is greater than the required mass, the gravitational pull of the star will be extremely strong which will lead to a black hole.

Neutron Star

Neutron Star

8)Black hole : A black hole is formed after a massive star is dead.Black holes have insane gravitational pull.It's so high that not even light can escape them. Blackholes disturb the time-space around it and they're strong even to swallow massive stars.

Blackhole

Blackhole