In this episode we look at the ground-breaking research on black holes that led to Roger Penrose, Reinhard Genzel and Andrea Ghez winning the 2020 Nobel Prize for Physics. On hand are experts Laura Nuttall of the University of Portsmouth and the LIGO–Virgo–KAGRA collaboration, who studies gravitational waves from merging black holes and Harvard University’s Shep Doeleman, who studies supermassive black holes using the Event Horizon Telescope.