Lead
In the universe, gas clouds are a very common phenomenon, and their existence indicates that the universe is not static, on the contrary, the universe is constantly changing, constantly giving birth to new stars and planets.
We don't have a specific standard for what kind of material these gas clouds contain, and how big they are, but that doesn't stop amateur astronomers from studying the universe.
In 2016, an amateur astronomer named Bernand discovered a large gas cloud in a set of images that was larger than the entire Oriental Cloud gas cloud and located in the galaxy of the same magnitude as the closest to the Milky Way--------
Next to the Andromeda Galaxy, this is the first gas cloud ever discovered in the Andromeda Galaxy.
But the Andromeda Galaxy is actually not young, so why hasn't this large gas cloud been discovered before? We can start with the composition and composition of this large gas cloud.
The Andromeda Galaxy will collide with the Milky Way in 100 million years, how will this large gas cloud affect future collisions?
1. A huge gas cloud in the Andromeda Galaxy.
In 2016, amateur astronomer Bernand discovered a huge nebula in the Andromeda Galaxy while taking photos of the vicinity of the Andromeda Galaxy, which Bernand named the "Giant Vira Nebula".
This nebula is located at the south pole of the Andromeda Galaxy, and the area of this nebula is even larger than that of the Eastern Cloud Gas Cloud, which covers almost the entire Aquila Galaxy.
For Bernand, the Andromeda Galaxy is definitely a strange galaxy, because this is not only the first time that a nebula has appeared in the Andromeda Galaxy, but this nebula has a distinctive feature in the galaxy in the near future, that is, this nebula is extremely faint.
Therefore, Bernand was so excited about the newly discovered nebula that he contacted astronomers at the Essen Observatory to confirm the nebula.
The nebula will be named "SDS so1", a name that reflects the Essen Observatory's respect for Bernand and is inspired by the name given to Dr. Chart de Rosseser, a renowned scientist in charge of astronomical research.
According to the observations of the Essen Observatory, they found that this nebula did not receive light in the visible band, but absorbed most of the light by the nebula, which made astronomers interested in the composition of this nebula.
Because all astronomers know that most of the matter in the universe is made of hydrogen, which is a special element that can leak light, why does this nebula not receive light in the visible band?
Astronomers then analyzed the material composition of the SDS SO1 nebula, and finally found that the material of this nebula not only contains hydrogen, but is rich in oxygen, which makes astronomers further question, why does SDS SO1 no longer contain hydrogen?
After further analysis of the starlight of this nebula, they found that the reason why this nebula does not contain hydrogen is that SDS SO1 is formed by the diffusion of interstellar matter outside the galaxy.
2. The impact of external gas clouds entering galaxies.
Through this newly discovered gas cloud, it seems that we can already find at least one galaxy in the vast universe that is different from the Andromeda Galaxy, that is, this galaxy does not contain hydrogen, which is the first time that a galaxy has such a special chemical elemental composition.
The Andromeda Galaxy is the closest galaxy of the same order of magnitude to the Milky Way, and this time thanks to the presence of a gas cloud called SDS SO1, astronomers are exploring the formation and evolution of new nebula groups.
According to astronomers' calculations, the diameter of SDS so1 is as high as tens of thousands of light-years, and in the universe, only the interstellar dust dispersed nebula group has such a huge scale.
The fact that the Interstellar Dust Nebula Group can reach such a large scale also means that it has a strong cohesion, which has surpassed our understanding of interstellar dust condensation.
Amateur astronomer Bernand discovered this nebula with just a few images, and compared with the astronomical telescopes at the Essen Observatory, there is a huge gap between the observation capabilities and expertise carried by the first-line astronomical telescopes.
Therefore, not only can we find the presence of external factors in the tritium element present in SDS so1, but we can also find that the Andromeda galaxy itself is a large galaxy, and the area of the SDS so1 gas cloud is only a small part of the planet's gas cloud.
However, observations from the Essen Observatory show that the SDS SO1 gas cloud is not only interstellar dust, but also rich in gaseous matter, including even the most dense helium.
Since gaseous matter cannot be visualized in space, there are great limitations in the use of visible light to observe gas nebulae, so the gas composition of the SDS SO1 nebula can only be analyzed by spectroscopic observations.
But even so, it is not difficult to find that the gas composition of the SDS so1 nebula is very rich, and the gas elements contained in it are all produced in the process of stellar evolution, so the age of the SDS so1 nebula is undoubtedly extremely old.
In the distant past, the evolution of stars in galaxies ejected all the materials such as gas and dust, and this part of the matter will gradually spread out to form gas nebulae, and SDS so1 is probably formed for this reason.
Over the next few million years, the material of the SDS SO1 nebula will gradually be attracted by the Milky Way into its interior, which will impact the original stars in the galaxy, which will accelerate the evolution of the gas nebula.
When nearly 99% of the atoms and molecules in this part have reached a high velocity of collision with each other, SDS SO1 will form a gravitational point inside it that can support its own motion, which is the star inside the gas nebula, which will then continuously generate the power of nuclear fusion, thereby releasing energy, keeping the surrounding gas in a high state, and finally forming a brilliant new star.
3. Fusion of gas nebulae.
Eventually, a large number of high-quality newborn stars will form in the interior of the SDS so1 gas nebula, and this nascent star will become a new star system, so that SDS so1 will no longer be a gas nebula, but a real star cluster.
Not only that, SDS so1 is also the first star cluster to form in the Andromeda Galaxy, and this gas nebula will continue to form new stars, and eventually SDS so1 will have thousands of stars, which will make the Andromeda Galaxy even more dazzling.
Due to the very large area of SDS so1, the gas nebula inside SDS so1 will continue to form new star clusters, and eventually a second nova will be formed inside SDS so1, so that the Andromeda galaxy has two huge star groups, so what will be the area of SDS so1?
Until the Milky Way and the Andromeda Galaxy collide, the clusters and clusters contained in SDS SO1 will continue to merge, and eventually SDS SO1 will be much larger than it is today.
Until the near future, when SDS SO1 collides with the Milky Way's magnetic field, the stars it contains will be attracted into the galaxy's disk and eventually form a new star system.
This new planetary system will have its own stars and orbit around them, which will allow the new planetary system to produce celestial material such as planets and moons, and on this day, the Milky Way and the Andromeda Galaxy will collide 100 million years away.
4. Whether SDS SO1 also exists in the Milky Way.
The closest position to the Milky Way is often the location with the most frequent star activity in the Milky Way, which is most prominently displayed in the "galactic heart".
However, there is not only stellar activity in the galactic center in the Milky Way, there are also a large number of gas nebulae distributed in the Milky Way, and the evolution process of these gas nebulae is similar to that of SDS so1, so is there also a super-large nebula in the Milky Way?
Of course, this possibility exists, after all, it is not only the material produced by stars that can form gas nebulae, but also the influence of external factors, and other causes in the universe can also form gas nebulae.
These gas nebulae expand to a greater extent in the universe, so the Milky Way, as a galaxy, also has the possibility of being covered by gas nebulae.
However, because there are tens of billions of stars in the Milky Way, which can emit light and make the gas nebulae inside the Milky Way appear to be lit up, it is difficult to find a faint nebula as faint as SDS SO1 in the Milky Way.
epilogue
Although the existence of SDS so1 has been confirmed by the Essen Observatory, the mystery contained in it has not been completely revealed, and what kind of mystery does SDS so1 contain in the Andromeda galaxy will be solved when the Andromeda galaxy and the Milky Way collide in 100 million years.
And what kind of effects will the collision have, so much so that it could lead to new astronomical phenomena, or it could bring changes to entire galaxies?
This is something that awaits the development and research of science and technology in the future, so there is still more room for amateur astronomers to expand their observation capabilities and techniques, and they may play an even more important role in the study of the universe in the future.
At the same time, although the age of the Andromeda Galaxy is longer than that of the Milky Way, and there are more stars in the Andromeda Galaxy, we cannot rule out the possibility that there are other life forms outside the Andromeda Galaxy in space.
Even so, it is also possible that the alien civilization was discovered by us first, or it is possible that we were discovered by the alien civilization first, after all, there is a big gap in the scientific and technological level of the alien civilization, which we can know from the mutual detection of countries on the earth.