If you point your spaceship toward the constellation Leo, fire your thrusters, and travel about 5 billion light-years, you’ll find yourself in the vicinity of the Cosmic Horseshoe, home to what might be the most massive black hole ever discovered.

Astronomers have used a new method to weigh the ultramassive black hole. They hope this will help them better understand how to find and measure them in the future.

Astronomers have uncovered what may be the most massive black hole ever found, 36 billion times the mass of our Sun, hidden at the heart of the Cosmic Horseshoe galaxy. Located 5 billion light-years away,