TON 618 is a supermassive black hole with an estimated mass of 66 billion times that of the Sun. It is one of the most massive black holes ever discovered and is located at the center of a distant quasar, approximately 10.4 billion light-years away. Its mass is so great that it exceeds the combined mass of all the stars in our Milky Way galaxy. Its enormous size has led astronomers to classify it as an "ultra-massive" black hole. TON 618 is the engine of a highly luminous quasar, meaning the bla

Meet TON 618 a giant black hole video is an educational size-comparison explaining the scale of TON 618, UY Scuti, and Stephenson 2-18. All values shown are scientific approximations based on astronomy research, and the visuals are used only to help viewers understand relative sizes in space. This content does not promote harm, danger, or misinformation - it is purely for learning about cosmic scale, black holes, and giant stars. Numbers shown represent geometric size ratios (volumes and diamete