A few years ago, the dragonfly 44 galaxy was born. Some researchers said that the amount of dark matter contained in it is 10000 times that of ordinary matter – 99.99% is dark matter, which is quite different from the galaxies of its kind. Therefore, its formation cannot be explained by the existing models. However, an international research team pointed out in the latest issue of the monthly report of the Royal Astronomical Society that their new research shows that the galaxy contains only 300 times as much dark matter as ordinary matter, which is not much different from that of the same kind. The existing models can explain its formation, overturning the previous view. < / P > < p > when astronomers studied the Coma Cluster with thousands of galaxies, they found “Dragonfly 44”, which is about 300 million light-years away from the earth and contains the same amount of dark matter as the Milky way, with a mass of 1 billion suns. But the Milky way contains hundreds of billions of stars, while Dragonfly 44 has only 100 million, which means it contains about 10000 times as much dark matter as it does – 100 times more than expected. < / P > < p > however, astronomers from the Netherlands, the Canary Institute of Astrophysics (IAC) in Spain, and others, working together to study the globular clusters around the galaxy, refuted this view. Their study found that the total number of globular clusters around the galaxy is only 20, instead of 80 previously thought. < / P > < p > the researchers explained that the total number of globular clusters is related to the total mass of galaxies. If we know the number of globular clusters, we can get the number of dark matter. They concluded that the total amount of dark matter contained in dragonfly 44 is about 300 times that of visible matter (stars). Previously, scientists estimated that the amount of dark matter contained in ordinary galaxies is between 10 and 300 times that of visible matter, which means that the amount of dark matter contained in the galaxy is within the normal value. < p > < p > IAC researcher Ignacio Trujillo explained: “previously, researchers claimed that there were 80 globular clusters, but we found only 20, which greatly reduced the amount of dark matter contained in the galaxy. The ratio of dark matter to visible matter is no longer ten thousand to one, but three hundred to one. Therefore, dragonfly 44 is not previously thought to be unable to use the existing Galaxy shape Explain in a model. The reality is that it’s not that strange, and existing models can explain it. ” < / P > < p > the major discovery of “Dragonfly 44” in that year can be said to bring a huge dark matter research target to the scientific community. Wired, New Scientist and others reported on this unheard of guy one after another. In view of the fact that “Dragonfly 44” runs counter to people’s concept of galaxy formation, scientists can’t help but sigh: our understanding of galaxies is still so insignificant! However, four years later, it was found that there might have been a big misunderstanding about the so-called dark matter Galaxy – “Dragonfly 44” disappeared from all galaxies. In fact, this is not a pity. On the contrary, it is the embodiment of more respect for the laws of science itself after technological progress and in-depth research. Spontaneous combustion at a Guangzhou Motor vehicle intersection and other traffic lights in Shenzhen