Scientists have recorded a signal from the planet Gliese 581d and have already managed to state that the conditions on it are suitable for the origin and maintenance of life. At the moment, it is known that the celestial body is 2 times larger than the Earth. The signals were recorded for a very long time, but only in 2014 it was possible to notice that they are repeated, are cyclical. Not a single phenomenon in the Universe is capable of this, unless, of course, it is artificially created.
Signals indicate the presence of an extraterrestrial civilization on the planet, trying to transmit a message to neighboring systems and galaxies. But so far it has not been possible to decipher the "letter".
About the planet
Gliese 581d is an exoplanet in the system of the same name (Gliese 581). At the moment, its existence is not precisely defined, but everything indicates that it really exists. The planet is located in the constellation of Libra, and is pretty close to our solar system. Before her - only 20 light years.
If you believe the information received in September 2010, the planet under consideration in its system is in fifth place from the star (Earth - in third, after Venus and Mercury). Many scientists call it “Super Earth”, because it has dimensions that are 2 times bigger than the globe. And its mass is 6-8 times greater.
The first report that a potentially inhabited exoplanet was discovered was received from Switzerland on April 24 in 2007. Together with Gliese 581d, Gliese 581c was recorded. The discovery belongs to several astrologers, whose actions were supervised by Stefan Udry.
Scientists are still arguing about the reality of the planet, but skeptics have always met in space exploration.
Discovery process
According to British experts, their team of astronomers caught a message from the planet Gliese 581d. When the information is confirmed, disputes and discussions about the existence of a celestial body will be finally stopped. Now there are many opinions on this subject, starting with the reality of the planet and ending with physical anomalies that capture Earth technologies.
At first, there was only one way to detect celestial bodies. They are viewed in powerful telescopes when they pass in front of their star. This technology was used by American scientists in 2014.
But their British colleagues expressed doubts about the relevance of the method. With it, you can find only gas giants, like our Jupiter. They themselves used more modern technologies that confirmed the location and reality of the planet.
It is now known that Gliese 581d is believed to be a potentially inhabited planet within the red dwarf system of the same name. The distance to it is 20 light years.
Signal characteristic
When scientists first recorded the signal from the planet Gliese 581d, they did not attach much importance to it. Then the existence of her herself was under a big question, on this occasion there were numerous discussions. Some astronomers still consider the signals to be a simple manifestation of stellar activity, but increased, because otherwise they would not have been able to reach the solar system.
In 2014, American scientists repeatedly tested the characteristics of the received signal. They found no evidence that he was being fed artificially. Astronomers suggest that it is the result of light and magnetic radiation from a red dwarf. At the intersection, they gather, creating a special cosmic noise that could not be caught earlier.
On March 7 of this year, it became known that the signal from the potentially inhabited planet Gliese 581d is not a consequence of cosmic noise. It is repeated every few months, has a similar cycle.
Skeptical debate
After the report on the discovery of the planet was received, the data was cross-checked using HARPS. But the discovery of Swiss scientists was not confirmed. Russian astronomers also made attempts to find a celestial body through their technologies until 2012. Then the scientist Roman Baluev expressed doubts about its reality.
In 2014, attempts to confirm the existence of Gliese 581d were made by astronomers at the University of Pennsylvania. There were calculations that refuted the information of Stephen Udry. According to them, recorded phenomena are only a consequence of stellar activity.
At the beginning of spring 2015, the refutation of Glis 581d data was called into question. British scientists have explored planetary discovery methods for American astronomers. They spoke out that these methods are far from perfect and do not meet modern requirements.
Thus, if the planet Gliese 581d itself is questioned directly, the signal from it also does not exist. At least today there is no clear evidence of its reality.
As for the signal, skeptics point to light and magnetic radiation. When they intertwine, they can make characteristic sounds that a person mistakenly mistook for an extraterrestrial message. Its cyclicity is actually absent. The signal changes, but very slowly, like everything that happens in the Universe (relative to people's lives).
Hypotheses and modeling
Despite disagreements with astronomers from many countries, British scientists believe in the existence of the planet Gliese 581d. Moreover, they insist that the supplied signals represent a certain algorithm of encrypted characters. Those together are a message to neighboring systems and galaxies.
British astronomers are sure that if they use not only high-tech equipment, but also modern research methods, it will be possible to separate the signal itself from interference. After that, you can try to decrypt it. Perhaps civilization from the Gliese system is also trying to find its brothers in mind.
Thanks to numerous computer simulations, it was possible to establish that there are water oceans on the planet under consideration. The presence of atmosphere and clouds with precipitation in the corresponding zone is also noted. And as previously reported, in order for life to begin, water is needed. Therefore, Gliese is suitable in all respects for living. It is located in a favorable zone relative to its luminary, has water, and clouds with precipitation indicate its circulation.
Signal Data
No one can say for sure when the signal was first sent from the planet Gliese 581d. Initially, he was not taken seriously, since then the heavenly body itself was not discovered. Later, after the first talk about him, more attention was paid to the reality of the planet, rather than to the message.
Until the spring of 2015, it was assumed that the signal was ordinary cosmic noise. Similar sound waves have already been captured by terrestrial equipment, and more than once.
Now astronomers claim that the signal repeats at a small interval. It is crowded with noise, but attempts are underway to clear the message. Ultimately, scientists plan to decipher signals from a potentially inhabited planet.
Communication with alien civilizations
If it happens that Gliese 581d really turns out to be a really existing planet with its own population, then humanity needs to be more careful in trying to establish a dialogue with it. Scientist Stephen Hawking has repeatedly called on people to beware of communication with alien civilizations.
He argues his statement by saying that the resources of any celestial body that has something similar to the globe are limited. They may stop. And then the inhabitants will have no choice but to look for a similar planet to use it as a source of resources.
