Can the radius of the largest black hole exceed the sum of the orbits of galaxies in the solar system?

How terrible is the biggest black hole in the known universe? Scientists have discovered a supermassive black hole 4 billion times the mass of the sun in the rod-spinning galaxy of Cetacea, about 7 million light-years away from the Earth.

it is the black hole in the center of Holmberg's 15A galaxy.

And the story about it comes from the most powerful observatory in the world? Speaking of the Parina Observatory.

in June, 219, a joint working group composed of several astronomers came to the Parrina Observatory in southern Chile, and began to conduct academic research on Holmberg's 15A galaxy 7 million light-years away for one month.

according to the telescope imaging, there is a bright star in its galaxy, which is rotating around the center of the galaxy at an extremely fast speed. Astronomers speculate that there is probably a supermassive black hole in it.

Later, astronomers discovered that sub-black holes did exist by using more accurate and complicated calculations.

its mass is equivalent to 4 billion times the mass of the sun, and the black hole is so huge that its radius even exceeds the sum of the orbits of all galaxies in the solar system.

According to scientists' speculation, this black hole and TON 618 in Canis Canis can become the largest known black hole. Studies have shown that it was formed by the merger of two early galaxies, and this type of galaxy merger is very rare.

This provides a new idea for scientists to study the formation of supermassive black holes. In about 4 billion years, our Milky Way will also collide with Andromeda, and this collision is likely to give birth to a black hole with a larger mass.

in the early 2th century, astronomer Vesto? Melvin? Sliber first discovered the phenomenon of galaxy redshift, that is, according to the spectral lines, the luminous colors of space objects are different, which depends entirely on whether they are close to or far from us.

red shift means far shift, while purple shift means near shift.

Based on the discovery of this phenomenon by Sliber in 1913, scientists observed that Andromeda galaxy was purple and was approaching the Milky Way at a speed of 12 kilometers per second.

If this theory is correct, those two galaxies will merge into a larger elliptical galaxy in about 7 billion years.

in fact, in this kind of galaxy collision, the stars and other celestial bodies contained in the galaxy will not really collide and contact physically, because the galaxy itself is extremely dispersed.

like the star closest to the sun? Proxima centauri is even 4.2 light years away.

theoretically speaking, it is also possible that our solar system will be released from the merged new galaxies during this collision.

In the early stage of galaxy collision, it may even become a part of Andromeda galaxy, but because the distance between stars is very far, this kind of thing will not have any negative impact on the solar system itself.

However, Xiao Bian thinks that since the sun will enter the red giant stage in 4 billion years, the earth at that time will no longer be suitable for survival.

If human beings can complete the interstellar migration plan and continue it, it is very likely that they will witness the collision process of two galaxies, and this collision has a great chance of forming a super black hole in the universe that is larger and enough to set a new record.