I am not puja gade but Anish her son. I have been keeping interest in cosmology for long time. I have also read the many other books of S. Hawking like brief history of time, universe in a nutshell, George series etc . This is the best book as the others were and Though stephen hawking is now resting in peace he is still with us through his books. And through this book I have got the satisfying answers that I was searching past few years.