@astroplaneet: TON 618 is one of the largest and most massive black holes ever discovered. Located over 10 billion light-years from Earth, it lies at the center of an incredibly bright quasar. With an estimated mass of around 66 billion Suns, its event horizon stretches nearly 390 billion kilometers across. If TON 618 replaced our Sun, it would easily engulf the entire Solar System far beyond Neptune's orbit. Its immense gravity bends space and time, making it one of the most extreme objects known in the Universe. #space #ton618 #scary #stephenson218 #facts