Black holes are the most mysterious objects in the universe; matter and space folded into an enigmatic knot from which not even light can escape. The 2020 Nobel Prize awarded research into black holes, thinking about the unthinkable, and seeing the unseeable. But just what did these extraordinary scientists do? Tune in as we try to unravel the puzzle. FEATURING – Professor Geraint F. Lewis, University of Sydney. Geraint's research focuses on cosmology, gravitational lensing and galactic cannibalism, all with the goal of unravelling the dark-side of the universe. – Professor Peter Tuthill, University of Sydney. Peter is an expert in astrophysical imaging; studying stars and their immediate environments with unprecedented resolution. This public talk was held virtually and recorded on 2 December 2020. For further resources, including the transcript, visit our website: https://bit.ly/36wwXfZ