The Milky Way is the star system where the solar system is located, including 150-400 billion stars and a large number of star groups, nebula, various types of interstellar gas and interstellar dust, and black holes.

Its total quality is 1.5 trillion times the quality of the sun. In fact, human understanding of the galaxy is still very limited. Let's take a look at the amazing facts about the galaxy.

Although the galaxy looks huge, it is just a middle galaxy in this galaxy group, and this galaxy group contains about 50 galaxies. Although there are so many galaxies, the distance between each galaxy is extremely far away, and it is constantly away from each other.

Scientists believe that at the beginning of formation, the scale of galaxies is relatively small. But after formation, it will continue to merge with other galaxies. From its formation to the present, the Milky Way is still merging with other galaxies.

Scientists observe that the edge of the galaxy is swallowing another galaxy. In order to maintain the vitality of the galaxy, most galaxies will devour other galaxies, and in the future, the galaxy will also merge with the galaxy next to it, thereby forming a larger galaxy.

In the summer of the northern hemisphere, the Galaxy looks brighter, and there are more stars. The galaxy in winter looks darker and has fewer stars.

This is because, with the rotation of the earth, the night sky of the earth in the summer is towards the center of the Milky Way. The star density there is very high, so the Galaxy looks brighter.

The night sky in the northern hemisphere is directed towards the edge of the galaxy, where the star density there is much lower than the direction of the silver heart, so the Galaxy looks darker.

We can only see about 7,000 stars, and most are no more than 1,000 light-years away. Because there's so much interstellar dust in the Milky Way, it blocks starlight and prevents us from seeing what should be a very bright galaxy.

The number of stars in the sky is as many as the sand in the desert. Not to mention the universe, even how many stars in the Milky Way, scientists are confused. At present, the European Space Administration has drawn the position of 1 billion stars in the galaxy.

However, most scientists believe that this number is only 1%or less of all stars in the galaxy. Everyone generally tends to think that at least 100 billion stars are in the galaxy.

The stars visible to the eye in the night sky are not only in the Milky Way, but they are very close to the earth. Although there may be 100 billion stars in the galaxy and at least 100,000 light years in diameter, the stars and scope we can see with the eye on the earth are very limited.

At present, we can basically determine that the center of the galaxy has an extremely terrifying large quality black hole, and its quality is between 3 million and 4 million times the sun.

However, because the black hole can absorb all nearby light, we cannot observe it with the eye. At present, scientists around the world have formulated an observation plan to use the world's radio telescope to initially achieve the goal of directly observing this black hole.