Thomas Hertog was Stephen Hawking's PhD student and went on to become a leading cosmologist in his own right. He and Hawking developed a radical new theory concerning the origins of time itself: answering the biggest question imaginable - why does our universe have the laws of physics that it does? This would prove to be Hawking's final scientific theory and at Hawking's request Thomas wrote a book on the subject: On The Origin of Time. In this episode of the podcast, Thomas sits down with us to reveal how it all began...

Learn more about your ad choices. Visit podcastchoices.com/adchoices