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Stephen Hawking is considered the greatest physicist after Einstein. He was born in England in 1942. He was very skilled in Mathematics from an early age. He wrote the book 'A Brief History of Time: From the Big Bang to the Present Times" in 1988. In this book, he explained cosmology for the general public. It became famous and established his reputation as a great scientist. He received his Ph.D. in cosmology from Cambridge University in 1968. But fortune did not favour him. In 1972, he became a victim of Gehrig's disease. Since then, he had been confined to a wheel chair with no power to control his body. But he continued his teaching through the help of computer. In 1974, he won the prestigious Albert Einstein award for Theoretical Physics. In 1979, he joined Cambridge University as Lucasian Professor of Mathematics. He carried out his research work using his computer. This great scientist breathed his last on 14 March, 2018.