STEPHEN Hawking’s final work, which tackles issues from the existence of God to the potential for time travel, was launched on Monday by his children, who helped complete the book after the British astrophysics giant’s death. Hawking was forever being asked the same things and started work on Brief Answers to the Big Questions last year — but did not finish it before he died in March, aged 76.

It has been completed by the theoretical physicist’s family and academic colleagues, with material drawn from his vast personal archive. “He was regularly asked a set of questions,” his daughter Lucy Hawking said at the Science Museum in London. The book was an attempt to “bring together the most definitive, clearest, most authentic answers that he gave. We all just wish he has here to see it.”

The 10 questions Hawking tackles are: — Is there a God? — How did it all begin? — What is inside a black hole? — Can we predict the future? — Is time travel possible? — Will we survive on Earth? — Is there other intelligent life in the universe? — Should we colonise space? — Will artificial intelligence outsmart us? — How do we shape the future?

“He was deeply worried that at a time when the challenges are global, we were becoming increasingly local in our thinking,” Lucy said. “It’s a call to unity, to humanity, to bring ourselves back together and really face up to the challenges in front of us.” In his final academic paper, Hawking shed new light on black holes and the information paradox, with new work calculating the entropy of black holes. Turned into an animation narrated by Hawking’s artificial voice, it was shown at the book launch. “It was very emotional. I turned away because I had tears forming,” Lucy told AFP on hearing her father’s voice again. “It feels sometimes like he’s still here because we talk about him and hear his voice — and then we have the reminder that he’s left us.”

Published in Dawn, October 16th, 2018