Life Cycle Of a STAR
You see stars in the sky billions and billions of them, but did u ever wonder how they came into existence. Just like anything else in this universe everything has a life cycle and today I would like to share with you the birth and death of a star.

Believe it or not the stars are formed from nothing but gases that mostly hydrogen and helium, these gases can be called the building blocks of all stars (of course we know that quarks and leptons are the building blocks of matter). These clouds of gases when come together it generates a lot of heat and friction which eventually results in a gravitational pull towards the centre of the cloud. This force becomes so enormous and the energy produced from it so great that it starts taking a solid form and after few hundreds of years results in a star. This star is burning hot and the temperatures are so high if some object were to come even remotely close to it would turn to ashes.

The size of the star depends on the volume of clouds that were involved in its making, and you know our sun is one such star and smaller by comparison. The surface of stars are very dense if a mm cube piece were to be brought to earth it would weigh in thousands of tonnes.

When a star is burning the fuel consummated is hydrogen for half of its life and then this hydrogen converts into helium which again acts as fuel for the remainder of its life. The star has two distinct components the core and its surface. At the end of its life the outer core expands and the inner core contracts.
If the star is big enough it results in a huge explosion producing great amounts of energy and also hydrogen and helium gases. This cosmic spectacle is called supernova, this lights up the space for days together and it is for me the most beautiful sights the universe can offer.

Black holes are formed after the star explodes and the core continues to contract and collapse in its own gravity at one point where the gravity becomes so powerful that it even pulls in the light particles coming towards it. Since there is no light reflected from this dense ball(core) it cannot be seen hence the term black hole.The phenomenon of black hole is one of the greatest mysteries that we are still trying to figure out and when we do it might open a new dimension to our knowledge.

So next time you look up at stars I hope it will change your perspective towards it. This is an effort to show to you people there is more to life than just living it for the sole purpose of living, there are things to be seen, new frontiers to be explored it just requires some effort from you. I hope this inspires a few from the rise from the stale existence and do something exciting not for anybody else but for themselves.

Believe in yourself.