13.8 billion years ago, the universe was born in the Big Bang of the Singularity. After the birth, the universe quickly formed various basic substances. These basic substances continued to condense and evolve to dry stars, planets and other celestial bodies, and the aggregation of celestial bodies continued to form various Kind of galaxy.
So what kind of force guarantees the evolution of the universe after its birth? In fact, they are the four fundamental forces of gravity in the universe. Gravity is the most common force in the universe, and it is also the most important force. Although it is the weakest of the four forces, it plays an important role in the evolution of celestial bodies and galaxies in the universe.
The role of gravity guides the formation of celestial bodies and galaxies, while maintaining the stability of galaxies. There are countless galaxies in the vast universe, but these galaxies can maintain a relatively orderly movement, all of which are due to gravity.
So how does this gravitational force come from is actually the distortion of time and space caused by the intrinsic mass of the object. Einstein’s theory of relativity reveals to us the mystery of space-time distortion in the universe. The entire universe is equivalent to a space-time membrane. Mass objects attached to this space-time membrane will generate a pressure, which will cause the distortion of space-time. It is this kind of distortion. Gravity is created.
The existence of gravity allows celestial bodies and galaxies to maintain a stable mutual movement. Planets move around the central star. For example, the eight planets of the solar system move in a circle around the star, and the solar system is not stationary. It is also moving around the massive black hole in the center of the Milky Way.
The Milky Way is also moving around other sources of gravity, and the entire universe may also be in a state of motion, but we don’t know where the biggest source of gravity of the universe is, and how big is it? If the multiverse theory is correct, then our universe may only be part of a larger space, and the entire universe may also be moving around a large center of mass outside the universe.
Although a stable relative motion can be maintained between galaxies, galaxies are very unstable in the early stages of formation, and celestial collision events occur frequently. For example, there were hundreds of planets in the early solar system. It was precisely because the galaxy was just formed at that time, it was still unstable, and the planets collided continuously, leaving only eight planets in the end.
Large galaxies like the Milky Way also collide with each other, and this kind of collision of large galaxies is a common phenomenon in the universe. And scientists discovered through observation and research that the Milky Way will collide with the Andromeda Galaxy in billions of years, and finally merge into a brand new galaxy.
So will the collision of two galaxies in the universe form a brand new galaxy? Not necessarily. It depends on the difference in volume between the two galaxies. If two galaxies have relatively small differences in volume, such as the Milky Way and the Andromeda Galaxy, their collisions will likely merge into a larger new galaxy.
But if the volume difference between the two galaxies is too large, it will be difficult to achieve fusion, and the smaller galaxy will be destroyed. Hubble once discovered a special galaxy in the depths of the universe. Scientists call it “R5519”. It is a ring galaxy about 108 light-years away.
The center of the “R5519” galaxy is not a huge gravitational source like the center of the Milky Way, but a huge hole. In the lens of an astronomical telescope, it was like a galaxy center was pierced by a galaxy cannon, leaving a huge wound.
I believe that many of my friends have heard about the void of the universe. This is an area of celestial bodies in the universe where matter is very short. There are so many cosmic voids in the universe, and it looks like a region dug out of a galaxy. As for how the void of the universe is formed? Scientists have not reached all conclusions.
So how did this hole in the center of the “R5519” galaxy form? Scientists believe that this may be the result of the collision of two galaxies. Scientists found another smaller galaxy near the “R5519” galaxy. This galaxy collided with the “R5519” galaxy a long time ago. Due to the large difference in volume between the two galaxies, there was no fusion in the end, but a smaller one. The galaxy was basically destroyed, and a hole was left in the center of the “R5519” galaxy.
Such an observation and discovery made scientists very excited, and it allowed us to find a source of the void in the universe. At present, we already know that two galaxies with a large difference in size may cause one damage and one injury when they collide. Small galaxies will be destroyed, and a huge hole will be left in the center of a large galaxy.
Seeing this result, scientists are also very grateful that 4 billion years later, the collision between the Milky Way and the Andromeda Galaxy will have a good result. The difference in size between the two is small, and there will be no damage or injury. If the volume of the Milky Way and the Andromeda galaxy are quite different, once a collision occurs, the final result may be the same as “R5519”. The massive gravitational source in the center disappears, leaving a huge hole.
If this is the result, it is definitely a catastrophe for the Milky Way galaxy. The galactic center loses its massive source of gravity and becomes a hollow. The stability of the entire galaxy will be broken. At that time, the star system could not remain stable, and it hits. Incidents happen frequently. In a chaotic galaxy, the earth and humans cannot survive, we can only leave the galaxy.
Of course, scientists still have many doubts about the reason for the formation of the hole in the center of the “R5519” galaxy. We must know that this galaxy is 108 light-years away from us, and what we are currently observing is also 10.8 billion years old. We must know that this time the universe was only born 3 billion years ago. In theory, this stage is still in the early stage of the formation of galaxies in the universe.
These two galaxies were able to collide 10.8 billion years ago, indicating that these two galaxies have formed for a relatively long time. This is in contradiction with our current theory of galaxy evolution. Therefore, there are still many mysteries about the situation of the “R5519” galaxy that need to be solved continuously.