Astronomers have already discovered more than 6,000 planets outside the solar system and the search continues further. The authors of the new study published on the ARXIV preprint server found out where the Milky Way mainly forms in our Galaxy.. Astronomers found that stars with planets of large mass have higher metallicity than those that have fewer metals. They also found that stars with planets, usually younger than stars without planets, writes Universe Today.

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One of the key aspects of the development of planets in our galaxy is the presence of metals, that is, elements are heavier than hydrogen and helium, and this is called mettalism. It is worth saying that astronomers call all chemical elements except hydrogen and helium with metals, although from the point of view of chemistry, this is not entirely true.

Heavy chemical elements are formed in the nuclei of the stars and while these stars explode supernova. Thus, metals spread throughout space and form part of the interstellar medium. Understanding the distribution of metals gives an idea of \u200b\u200bthe age, history and speed of the formation of stars and planets.

Astronomers studied what is known as the radius of the birth of the Galaxy. This term refers to the distance from the center of the galaxy on which stars are formed, and therefore planets. With the help of astronomical data, scientists were able to appreciate the age of two groups of stars, those who have planets and those who do not have them. This allowed them to calculate the radius of the birth of a galaxy for planets based on the initial provisions of stars, their age and the level of metals in them.

The results showed that the stars with planets have a higher ratio of iron to hydrogen, they were born closer to the center of our galaxy than those that have no planets.

Scientists also found out that stars having planets with a large mass have a different distribution of iron to hydrogen and age than stars who have at least one planet with a small mass, and those that only have planets with a small mass.

The study shows that the planets of the earth's group, as a rule, are formed around stars with a higher ratio of iron to hydrogen.

Thus, scientists came to the conclusion that most often large planetary systems similar to ours are formed closer to the center of our Galaxy.

There is more metals and, although planetary systems can migrate to the outer part of the Milky Way, the opening gives a good direction to search for new worlds outside the solar system.

As Focus already wrote, astronauts for the first time in space created rocket fuel and oxygen using unusual technology. Chinese astronauts first demonstrated the technology of artificial photosynthesis in orbit.

Focus also wrote that astronomers discovered too huge black holes in the early universe than the models predict. The ratio of the masses of these black holes to the mass of their native galaxies is also very large.