At the end of his life Stephen Hawking asked his friend and collaborator Thomas Hertog to write a book about the cosmological theory they'd developed over 20 years of working together in the theoretical physics department at Cambridge.
The result is On the Origin of Time, outlining a new quantum theory which has a radical vision of our place in the order of the cosmos.
It's centred on a revolutionary idea: the laws of physics are not set in stone but are born and co-evolve as the universe they govern takes shape. Once upon a time, perhaps, there was no time.
Photo: Gert Verbelen
