Using a system of radio telescopes, the scientists behind the new study identified the pair of black holes through the jets of particles they emit. We can’t see black holes directly since light itself cannot escape them, but they can be detected by the faint glow of gas surrounding them like a halo.The bigger black hole of this pair is around 18 billion times more massive than the Sun, emitting a giant, bright jet of particles. The smaller of the two, a mere 150 million times the mass of the Sun, is twisted, appearing as a “wagging tail,” according to the researchers. Do black holes really exist ?

