Brief Answers, Big Questions: four new books celebrating the genius of Stephen Hawking's brilliant posthumous work, Brief Answers to the Big Questions, with each one offering two electrifying essays from one of the greatest minds of our age.

'If you feel you are in a black hole, don't give up. There's a way out'

What is inside a black hole?

Is time travel possible?

Throughout his extraordinary career, Stephen Hawking expanded our understanding of the universe and unravelled some of its greatest mysteries. In What Is Inside a Black Hole? Hawking takes us on a journey to the outer reaches of our imaginations, exploring the science of time travel and black holes.

"The best most mind-bending sort of physics" - The Times

Brief Answers, Big Questions: this stunning paperback series offers electrifying essays from one of the greatest minds of our age, taken from the original text of the No. 1 bestselling Brief Answers to the Big Questions.