UY is the largest known star, but this celestial body is much bigger than it, but it has no entity.

Human understanding of the universe is limited, and the scope of the universe that human beings can observe at present is also limited.

? Among the known celestial bodies in the universe, the largest star is the UY shield. It belongs to the red giant among the stars. From the human point of view, the size of the UY shield has made it difficult for us to describe, and we can only compare it with the familiar celestial bodies.

In the universe, the most familiar star is the sun, which is also the only star in the solar system. The sun accounts for 99.86% of the total matter in the solar system, and any star in the solar system, including the earth, is just a point in front of the sun. We can give a more vivid example. If the earth is a pinball with a diameter of one centimeter, then the sun is a town.

The sun is so big that we are all in awe. It is hard for us to imagine that there is something bigger than the sun in the universe.

In fact, there are not only many, but also many, UY is the biggest one. The size of the shield UY is 4.5 billion times that of the sun, which means that it can accommodate 4.5 billion suns inside, so its radius is more than 1700 times that of the sun.

? If the UY shield replaces the sun to lead the solar system, the orbits of the five planets closest to the sun, including the earth, will be swallowed up by it. Light is the fastest speed in the universe, and no object with mass can surpass the speed of light, and it takes 9 hours for light to bypass the UY shield, which shows the size of the UY shield.

Why is such a big star, the largest known star, just a red Supergiant star instead of a red Supergiant star?

This is because UY of S.H.I.E.L.D. is actually a big fat man with a shiny appearance, with a large volume but a small mass. The volume of a star is 4.5 billion times that of the sun, but its mass is only 32 times that of the sun, indicating that its density is extremely low. In terms of volume, no star can defeat shield UY, but in terms of mass, there are many stars larger than it. The most massive star in the known universe is R 136a 1 located in the Tarantula Nebula of the Large Magellanic Cloud.

? Its mass is 265 times that of the sun and its volume is more than 30,000 times that of the sun. It's a blue Supergiant star. Whether it is UY or R 136a 1, they are only the most numerous stars, but they are not the largest and heaviest celestial bodies in the known universe.

There are many kinds of celestial bodies in the universe, and stars are just one of them. There are many celestial bodies that are more mysterious and powerful than stars.

In the known universe, the largest celestial body is actually TON6 18. Its mass is 66 billion times that of the sun and its volume is 5 million times that of UY of SHIELD. As you may have guessed, this celestial body is a black hole. Black hole is the most mysterious and powerful celestial body in the universe, and its way of existence is very difficult for us to understand.

? Black holes have a horizon. In the event horizon, all substances, including light, cannot escape because of strong gravity. Because light can't come out of the event horizon, the inside of the event horizon is always invisible, which is why the black hole is "black".

We say that the volume of TON6 18 is 5 million times that of Shield UY, which is actually calculated according to the size of the black hole horizon.

? But we also know that there may be no solid surface in the horizon of a black hole. A black hole is a celestial body with infinite density and extremely high quality. So although the mass of a black hole is very large, its entity is actually just a singularity in the center of the black hole, and the volume of this singularity can be considered to be infinitely small. Therefore, if calculated according to the surface of the entity, TON6 18 can also be called the smallest celestial body in the universe.

? However, everything related to the interior of the black hole horizon is only theoretical speculation and mathematical deduction. What's on the horizon still gives us a lot of reverie.