Within 165 light years from the ground, the signals of 19 red dwarfs were discovered, 4 of which may have life around

According to reports, astronomers from Australia and the Netherlands have recently discovered 19 red dwarf stars in the process of searching for the exoplanet through the LOFAR (Low Frequency Array Telescope Network) located in the Netherlands. Signals, these 19 red dwarfs all came from within 165 light years, and the signals of 4 red dwarfs are particularly special.

So, what is the significance of the signals from these 19 red dwarfs?

In the process of star activity, the star itself will also emit radio waves, especially the energy emitted by the star, when it interacts with the magnetic field of the surrounding planets, it will release a more powerful radio wave.

In the solar system, such radio waves are accompanied by the activities of solar wind and are often easily captured, especially between the sun and and the earth’s magnetic field. However, outside the solar system, scientists have No similar radio waves were captured.

Until this time when searching through LOFAR, similar radio waves were accidentally found in the signals from 4 red dwarfs. This also means that there are very likely to be around these 4 red dwarfs. Multiple planets, which means that we have discovered 4 complete star systems.

So, is there possible life around these four red dwarfs?

Red dwarfs are small-mass stars, their mass is no more than 50% of the sun, their color is reddish, and the surface temperature is lower. Of course, this type of star has a longer life span. Research It is believed that the life span of red dwarfs is at least tens of billions or even hundreds of billions of years.

In the universe, the most common type of star is red dwarf. Take our Milky Way as an example, more than 75% of the stars in the Milky Way are red dwarfs, and there are many red dwarfs around them.There are also many planets. For example, 39 light-years away from the earth, the star system RAPPIST-1 called the "mini solar system" has a red dwarf star as its parent star.

Although the radius of the red dwarf star RAPPIST-1 is only one-eighth of the sun, there are 7 known planets around it, and they are all terrestrial planets . It also makes RAPPIST-1 one of the star systems around the earth where life is most likely to exist, and even an alien civilization.

Of course, through the study of red dwarfs over the years, many researchers believe that the true cradle of life in the universe is actually in the red dwarf system. One is because the number of red dwarfs is the largest, and it is also consistent with We speculate on the view that "life in the universe is universal".

Another reason is that the red dwarf star system has a very long lifespan, with a shortest period of tens of billions of years. In this long period of time, it is enough to nurture life and civilization.

And in the habitable zone of many red dwarfs, there are also terrestrial planets. For example, the nearest red dwarf system- Proxima , in its habitable zone, there is a suspected life Similar to the planet Proxima b , after receiving the mysterious narrowband radio signal from Proxima b at the end of last year, many people suspected that there may already be civilization on Proxima b.

Therefore, it is very likely that there are habitable planets around the four red dwarfs discovered this time, and it is not even ruled out that there may be life.

Because the super strong radio signals they emit are very similar to those produced by the Earth’s magnetic field and solar wind. Therefore, it can be inferred that the planets around these 4 red dwarfs are very active, and there will be powerful ones on the planets. The aurora is just like the aurora of the earth.

So far,Around these four red dwarfs, there should be planets with masses similar to that of the Earth, because if the mass is much smaller than that of the Earth, then such a powerful radio signal will not be generated.

So, if there is life, what should we do?

For humans at this stage, the possibility of us discovering life from exoplanets is not high, because our current detection equipment cannot directly observe the surface of exoplanets, all of which are through collection observations. The data is used for analysis, and the distance between the planet and the star is combined with other data to determine whether it is in the habitable zone.

Therefore, even if there is life around these 4 red dwarfs, it is difficult for us to find out, unless there are alien civilizations around these 4 red dwarfs, and these alien civilizations take the initiative to get in touch with humans, we will We can know their existence, otherwise, what we can do is still only preliminary observation and analysis.

.