There's a supermassive black hole in the centre of our galaxy 🤯😱 BBC

Subscribe and 🔔 to the BBC 👉 https://bit.ly/BBCYouTubeSub Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home Professor Brian Cox explains how astronomers believe supermassive black holes are formed. #BBC #Universe #BBCiPlayer Universe | Streaming Now | BBC iPlayer