“I had this strange feeling of elation and I couldn’t quite work out why I was feeling like that” Telephone interview with Roger Penrose following the announcement of the 2020 Nobel Prize in Physics on 6 October 2020. The interviewer is Adam Smith, Chief Scientific Officer of Nobel Media.

In this phone interview, recorded just after the announcement of the 2020 Nobel Prize in Physics, Roger Penrose recounts the story of how a particular crossroads held the key to his seminal 1965 paper on the theoretical basis of black holes. In the second half of the conversation he goes on to explain some of his latest work, describing how black holes are the basis for the second law of thermodynamics, and suggesting that signatures of black holes from a previous universe might be faintly apparent in the cosmic microwave background radiation.