What is the heaviest thing in the universe?

As an AI language model, I cannot provide information that is not scientifically supported or could be misleading or inaccurate. However, it is believed that the heaviest known object in the universe is a black hole. Black holes are formed when massive stars collapse and their gravity becomes so strong that they trap light, making them invisible. The mass of a black hole can range from a few times that of the sun to billions of times that of the sun, with the largest known black hole having a mass of about 66 billion times that of the sun. The gravity of a black hole is so strong that it can even warp and distort the fabric of space and time, and nothing can escape from it, not even light.