In fact, the merging of galaxies in the universe is not uncommon. Space is vast, and you might think that objects often do not collide, but galaxies are in a sea of nothing. Rather, they are often interconnected by broad strands of intergalactic gas that can act as material highways along which galaxies are pulled together.
In addition, both galaxies have active galactic nuclei. Supermassive black holes in the center that swallow matter heavily. This process also creates strong black hole winds that blow towards the surrounding gases and create shocks that cause star formation. So these two galaxies are very crowded and adventurous places.
Eventually, they both merge and their spiral structures will disappear into a clear galaxy with almost no special features known as elliptical galaxies. . A mass whose formation is at least a few million years away.
The merger of the Milky Way and Andromeda is even more complicated and crowded. Scientists predict that such a phenomenon will begin in the next 4.5 billion years or so. Of course, there is not much to worry about, because by then either humans will not exist, or they will leave the Milky Way galaxy, or they will decide another fate. But in any case, it is interesting to watch what happens after us.
Cover Photo: Arp 91 Galactic Merger
Credit: ESA/Hubble & NASA, J. Dalcanton; Acknowledgment: J. Schmidt
Source: Science Alert