A black hole is an extreme celestial body, so massive that its gravitational pull can swallow everything around it, not even light. The boundary of a black hole is called the event horizon, its radius is called the Schwarzschild radius, and its area is called the area of the black hole. The mass, angular momentum, and charge of a black hole are the only three characteristics of it, and all other information is hidden by the black hole, which is known as the "hairless theorem".
There are several possible pathways for black holes to form, one of the most common being the collapse of stars. When a star's core runs out of fuel, its internal pressure is not strong enough to resist its own gravity, and it begins to collapse. If the mass of the star is large enough, then its collapse will not stop until a black hole is formed. This type of black hole is called a stellar black hole, and its mass is about several times to dozens of times the mass of the sun.
A supermassive black hole is a special type of black hole that has a mass that far exceeds that of a stellar black hole, reaching millions to billions of times the mass of the sun. Supermassive black holes are usually located at the center of galaxies, and they are important factors in the formation and evolution of galaxies. The mechanism by which supermassive black holes form is not fully understood, but may be achieved through the merger of stellar black holes, the devouring of surrounding matter, or the growth of primitive black holes.
The existence of supermassive black holes can be detected by their effects on the surrounding environment. When supermassive black holes devour surrounding gas and stars, they form a high-temperature, high-density rotating disk called an accretion disk. The accretion disk emits intense electromagnetic radiation, ranging from radio waves to gamma rays. These radiations can be observed by telescopes, revealing the location and nature of supermassive black holes. Some supermassive black holes also emit high-velocity particle beams at the poles, called jets. Jets can extend over distances of thousands of light-years, forming giant radio lobes. These jets and radio lobes can also be detected by radio telescopes.
Ton618 is a supermassive black hole located at the junction of Canis and Comae, one of the largest known black holes and one of the brightest quasars. A quasar is a special type of active galactic nucleus that can outshine entire galaxies and is one of the most powerful energy sources in the universe. The light of ton618 was emitted 10.8 billion years ago, that is, what we see is what it looked like in the early days of the universe.
The mass of ton618 is a staggering 66 billion times the mass of the Sun, which means that its Schwartzschild radius is 1300 AU, that is, the diameter of its event horizon is 4000 AU, which is enough to accommodate the entire solar system, including even Neptune's orbit. The brightness of ton618 is 4 1040 watts, which is equivalent to 140 trillion times the brightness of the Sun, making it one of the brightest quasars known. The formation and evolution of ton618 is a mystery, its mass and brightness are beyond the existing theoretical models, it may be an extreme case, or it may be evidence of a new physical phenomenon.
ton618 is a stunning and awe-inspiring celestial body that demonstrates the extreme physical conditions and phenomena that exist in the universe. But what threat does ton618 pose to our planet and life? The answer is: no. ton618 is so far away that even if it erupts or merges, we won't be affected by it. Its gravitational pull and radiation are weakened by the expansion of the universe and the decay of distance, and for us it is just a distant point of light, a cosmic spectacle.
Therefore, we don't need to be afraid of ton618, but should learn about it with curiosity and exploration. ton618 is a valuable astronomical object that can help us reveal the origin and evolution of the universe, test our physical theories and models, and even discover new physical laws and phenomena. ton618 is both a challenge and an opportunity, which lets us know that there are still many unknowns and mysteries of the universe waiting to be discovered and explained.