Professor Andrea Ghez discusses new developments in the study of black holes. Through the capture and analysis of twenty years of high-resolution imaging, Dr Ghez and her team have moved the case for a supermassive black hole at the centre of our galaxy from a possibility to a certainty. Through the capture and analysis of twenty years of high-resolution imaging, Dr Ghez and her team have moved the case for a supermassive black hole at the centre of our galaxy from a possibility to a certainty. The Bakerian Lecture series began in 1775 and is the premier lecture in the physical sciences. Professor Andrea Ghez won the 2016 Bakerian Medal and Lecture for her acclaimed discoveries using the techniques of optical astronomy, especially her sustained work on the motions and nature of the stars orbiting the black hole in the centre of our Galaxy. royalsociety.org/events/2016/03/bakerian-lecture/