Only few of Scientists in all world become famous . their book are published their photos published in papers and they become famous . Newton , Einstein and Stephen Hawking are one of them .
He was born on Jan 8 1942 .Like other scientists his childhood is very difficult . He started to learn proper English at the age of 8 and when he was 13 year old He started to showing his class his fellow student called him Einstein However he was not as good in study He was very inspired from his math teacher Dikran Tahta .
He learnt math because of his inspiration . But his father want him to take in medical field he thought their is no scope of math .on that time learning of math is not possible as well as today time .

So,
Hawking choose physics and chemistry and applied for scholarships through oxford and He got it successfully . At the age of 17 He was youngest student in his class but despite all of this He called his academic world is very easy . On one Occassion his Prof said one can do anything without taking help of anyone and Hawking just need to know that after this incident He didn't take anyone help .After passing Oxford He went to Cambridge .
Hawking suffering from Modren newron disease . Which is also called Amyotrophic lateral sclerosis . In this disease muscle of human body doesn't respond and body cannot move . so Hawking used a wheel chair . a special computer made for him to talk with eyes and cheek muscle . Because after suffered from diseases only his cheek muscle moves .

When Hawking start to working on big bang theory on that time only 2 theories were aviliable big bang theory and steady state theory . He made big bang theory concept more power full . He said for general relativity it is essential that it starts from singularity He realized that the size of black hole is increased variously and could never be decrease . When he announce this result a young physician named Jacob Peczine said that with the eventrizer we can determine enatropy of black hole .Hawking did not accept this because to measure entropy temp is essential . But after some time He realized that black hole emits energy .
To prove this He tried to join quantum mechanics and general relativity and made it one 1st time in history . He said in quantum mechanis space is not empty but filled with little particles because they produce very eagerly and we could not measure them but if this phenomena is produced near to black hole them maybe black hole absorbs a pair and another might be shoot to space then size of black hole maybe decreased . The radiations emits from black hole is called Hawking rediations . it is called as black hole information paradox .
Hawking also prepend that when somethin enters in black hole it is complety invisible and no information could be collected from it . This is challenged by john preskill .
Preskill said that this statment is wrong information should be remained . In 2004 Hawking finally accept that preskill is almost right .
..............................What Hawking did for sciend is priceless . He write many books but his most famous book named is A brief history of time ...................
Hawking took his last breath in march 14 2018 and died .