In this engaging discussion, Ole Grell, an Emeritus Professor in Early Modern History, Adam Mosley, an Associate Professor at Swansea University, and Emma Perkins, an Affiliate Scholar at Cambridge, explore the life of Tycho Brahe. They delve into his revolutionary discovery of a new star, the impact of astrology on royal societies, and his innovative astronomical instruments. The conversation also highlights the political and religious influences of Brahe's time and the legacy of his meticulous research, culminating in his collaboration with Johannes Kepler.