In the 1970s, while mapping the universe through the cosmic microwave background radiation, scientists found some variations in the velocity of the Milky Way.
We do not feel it in our solar system, but when the scale is pulled down to the Milky Way and even our own galactic group, gravitational anomalies are observed in some regions. In about 5 billion years, the present galaxy group will collide, and together with some other smaller clusters of galaxies will join in this great convergence.
Currently, the galaxy is moving toward an unknown destination at a speed of 600 kilometers per second, all as a result of gravitational anomalies.
We live on Earth, except for the changing sky, as if everything around us is stationary, but the theory of relativity tells us that there is no absolute stationary object in the universe, the seemingly stationary Earth under the gravitational force of the Sun, but in fact, the speed of 29.78 kilometers per second around the Sun's revolution.
Rotation is also rotating around its own axis, and the linear speed of rotation at different latitudes varies greatly, for example, at the equator the rotation speed reaches 465 meters per second. While at the pole the speed per second is 0.
The Sun attracts the eight planets and all the matter of the solar system under its own gravity, and the Sun has its "superiors", just like the Earth.
The sun carries the entire solar system through the galaxy at a speed of 230 kilometers per second, although where it will eventually arrive depends on where the galaxy's destination is.
In fact, in the large-scale structure of the Universe, galaxies are only a small constituent unit, such as the Milky Way and the Andromeda Galaxy, which together belong to the Local Group of galaxies, and several galaxies are gravitationally bound to each other, forming the Local Group of galaxies about 10 million light years in diameter.
This galaxy group is not isolated, but exists in the Virgo Supercluster, which is not the largest cosmic structure, but only a small part of the Laniakea Supercluster.
It follows that this is a top-down hierarchical containment relationship, with each structure having its own trajectory and direction of movement, but it is the larger hierarchical structure that determines the final destination. After noting the anomalous acceleration of the galaxy, scientists believe that such an anomaly should come from the upper level of the galaxy's superior hierarchy: the Laniakea Supercluster.
And that mysterious source of giant gravity is pulling hundreds of millions of light years of surrounding matter slowly down toward it.
In 1986, astronomers discovered eerie phenomena at a location 150-260 million light-years away from us, filled with many ancient galaxies, and more importantly, they were all heading towards an unknown region and colliding on the way, generating massive electromagnetic waves.
But when astronomers point their telescopes at that location, they can't see anything because it happens to be in the occultation zone of the galactic disk.
We can only know that there is an anomaly in that direction, but we can't look at it closely with an optical telescope. The route to observe it is filled with gas dust and stars and other material that all block or absorb the light coming toward us from there, which is like taking a picture with a finger blocking part of the lens, so most of the scene in the distance is obscured by the finger.
We can map the entire universe, but we can't see the galaxies we are in.
Scientists later mapped the place with the help of X-ray and radio telescopes. Near the center of the giant gravitational source is a huge and dense cluster of galaxies with a mass of 100 trillion times that of the Sun, which attracts surrounding galaxies to it constantly.
But the mass here is only a tenth of what astronomers have estimated, far from enough to support the strong pull and inward motion of these galaxies.
Further exploration inward has led astronomers to the larger Shapley Supercluster, which contains nearly 8,000 galaxies with 10,000 times the mass of the Milky Way, making it the largest cluster within almost a billion light years.
But with deeper research, scientists believe that the mass of the Shapley supercluster, including the dark matter it contains, is still enough to bring the galaxy up to its current speed, and that there should be more forces around it that are assisting it.
Astronomers have discovered a cosmic void on the side of the Shapley Supercluster, which is like a desert off the beaten path on Earth, where there is very little matter and galaxies and low matter density, and perhaps it is this void that is assisting the Shapley Cluster and accelerating the galaxy's motion.
Cavities can create a dipole repulsion effect. By
The gravitational force of the Shapley cluster itself, combined with the repulsive force of the hole on it, probably contributed to the extremely fast speed of the galaxy's movement, as to whether other forces are involved, pending further study.
However, both the fall of the solar system into the black hole at the center of the galaxy and the collision of the Milky Way with the Andromeda Galaxy are billions of years away, and until then we do not have to worry much about these devastating catastrophes.
