The WebB space telescope took a new photo of the wrong dwarf Galaxy Leo P, located at a distance of 5.3 million light years from us. More precisely, that a picture of part of the galaxy with a huge number of young blue stars was obtained. Despite the fact that in this galaxy the process of forming new stars ceased more than 12 billion years ago, it turned out that it returned to life again, writes Live Science.
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All big galaxies, such as the Milky Way, come from small primary galaxies that grew up, encountered each other and each such interaction led to more stars.
But some primary galaxies still exist in the universe in its original form for more than 12 billion years, but they contain very few heavy chemical elements and mainly consist of hydrogen and helium.
One of these galaxies is the wrong dwarf galaxy called Leo P. It is an isolated galaxy and is far enough from the galaxies of the local group, which includes the Milky Way and the Andromeda Galaxy so that large neighbors can have any effect on it.
Although the Astronomers opened the Galaxy of Leo P for the first time in 2013, only recently, with the help of the Webb space telescope, it turned out that new stars unexpectedly formed in it. Astronomers were very surprised by this discovery, because it was believed that the isolated dwarf galaxies stopped the formation of new stars about 12.8 - 13 billion years ago during the period known as the era of reionization. This period in the history of the Universe came after the so -called cosmic dark centuries, when dense clouds of neutral hydrogen blocked the light.
When the first stars appeared, and then they exploded as supernovae, as a result, the cosmos filled a powerful ultraviolet light, capable of ionizing hydrogen atoms or splitting them back into electrons and protons.
Astronomers studied thousands of stars in the dwarf Galaxy of Leo P and found out that it took place in the process of star formation in the early stages of the history of the Universe, but then it ceased shortly after the era of reionization. This should be expected. But the astronomers also found that the dead galaxy came to life a few billion years later and new stars began to form in it again.
Astronomers collected data on the three other isolated galaxies, but found that starship stopped in all of them and was no longer resumed, so it is still unclear what exactly happened to Leo P.
The image of the Webb telescope in the lower right corner shows part of the Leo P galaxy filled with young blue stars.
These stars have such a color due to the presence of a very small number of heavy chemical elements.
As Focus already wrote, satellites with a solar sail will help protect themselves from a dangerous geomagnetic storm. Solar sails that allow satellites to fly with the help of sunlight can soon become a reality.
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