Hundreds of years ago, with the help of science and technology, human beings finally realized the dream of flying and walked out of the earth. When we stand outside the earth and see the vast universe, we all feel the smallness of the earth and human beings.
Before humans went out of the earth, they always fantasized that the world beyond the earth should be a very lively and wonderful space. But the outer space we really see is not as beautiful and wonderful as imagined, ultra-low temperature, ultra-super cosmic radiation and dark atmosphere. The whole universe feels so cold and cruel.
It turns out that the lively scenes we imagined have not been seen in the universe, and until now we have not found any extraterrestrial life and extraterrestrial civilizations. Is human being the only intelligent life in the universe? From the perspective of the vast universe, this possibility is very small, and most scientists believe that extraterrestrial life and alien civilizations exist, but they may be very far away from us, and we do not have the strength to detect them.
If the alien civilization is very far away from Earth, then there is no way for humans to go to the field to explore without realizing the technology of faster-than-light flight. Does that mean we didn't have any hope of reaching out to alien civilizations before that? Of course not.
Although we can't probe and look for alien civilizations before faster-than-light technology, there is a high probability that there will be intelligent civilizations that are much stronger than humans in the vast universe. It is possible that these intelligent civilizations are also trying to connect with other civilizations that exist in the universe, and the way to do so may be radio waves.
The transmission speed of radio is very fast, and the wireless transmission we currently use can reach the speed of light. This speed is not the limit of interstellar communication, if there is a civilization to master the quantum entanglement technology, and develop quantum communication, then it is possible to achieve faster-than-light wireless communication.
As long as we can receive such a signal of alien civilization that may exist in the universe, then we can also communicate without encountering, at least letting us know for sure that an alien civilization exists. We can even locate the galaxy where the alien civilization is located through the signal.
The vast universe is filled with countless radio waves, most of which are emitted by various celestial bodies, such as planets, Hengde and nebulae, which produce radio radiation, and special neutron stars such as pulsars can emit strong and regular wireless signals.
In addition to these celestial wireless signals, there is a radio wave in the universe that is unusually strong, releasing energy in just a few milliseconds that is equivalent to the sum of all the energy released in the lifetime of a star, a phenomenon known in radio astronomy as fast radio bursts (FRBs).
Fast radio burst is the most intense wireless signal wave in the universe currently known to mankind, and its wireless wave can even transmit tens of billions of light-years or more, which shows how powerful and terrifying its initial burst energy is. Scientists have been trying to solve the mystery of fast radio bursts, trying to figure out what its origin is.
Some scientists believe that FRBs may be emitted by neutron stars or violent black holes, and scientists have boldly speculated that these super-strong radio waves may come from advanced civilizations in the depths of the universe, and they are sending signals outward, hoping to get in touch with other intelligent civilizations in this way.
If radio waves are emitted by advanced alien civilizations, then such waves must be very regular. Although regular radio waves are not necessarily emitted by extraterrestrial civilizations (such as pulsars), as long as they are signals from alien civilizations, they must be regular.
Since 2007, astronomers have found more than 100 fast radio bursts in all directions of space, and after studying them, only 10 of them are recurring signals, and none of the FRBs show regularity. But this changed because of a new FRB.
A new detection study shows that 500 million light-years away, a spiral galaxy is regularly sending out fast radio burst radio signals. The study found that the FRB emits one or two radio pulses per hour for about 4 days, followed by a 12-day silence and then a restart.
This kind of such regular FRB, from the perspective of the Earth, sounds like a distant deep space is constantly sending us a "call signal". Through the tracking of this signal, we found its origin, which is a dwarf galaxy that is 500 million light-years away from Earth. So is this signal from a celestial body or an alien civilization?
For this, scientists are still exploring and studying, and more researchers speculate that its origin may be that stars or black holes produce super powerful radio waves due to some circumstances, and then spread around the universe. It has also been suggested that this may have been emitted by pulsars, as only pulsars are currently known to emit very regular radio wave signals.
Of course, these are just some of the speculations of scientists, what is the origin of fast radio bursts? More observational studies are needed, and only when more FRB signals are found will we be able to analyze more data to find the real mystery behind it.
For many ordinary viewers, it is natural to hope that fast electric storms are emitted by alien civilizations, because this may be the best way for humans to hope to communicate with alien civilizations. But if in the near future, scientists finally determine that FRBs are indeed super-strong radio waves emitted into the universe by advanced civilizations in the distant starry sky, can we restore such signals?
In the eyes of many people, we may not be able to understand that fast radio bursts are emitted by advanced civilizations, and this is a rare opportunity to be able to connect with alien civilizations. We should be proactive in responding to signals and waiting for an alien civilization to visit or reply, is the truth really as good as we think?
I believe that many friends have heard of the law of the dark forest, and some scientists have proposed that there is also a law of the dark forest in the universe, and it may be very common for a powerful civilization to bully and destroy a low-level civilization. Hawking has also issued many warnings: reminding humanity not to try to contact alien civilizations.
From the perspective of intelligent life, we need to understand that not all alien civilizations are friendly. There are still various contradictions within human beings, which lead to disputes large and small, so different intelligent civilizations may be more cruel. In the eyes of higher civilizations, human beings may be small ants that do not take us seriously.
Once humans respond to signals from higher civilizations, then advanced civilizations will know that there are humans in the solar system of the Milky Way. Then send a spaceship to earth, whether such a visit is friendly or malicious, it is difficult for us to know.
If it were friendly, humanity might benefit from it, allowing human technology to make a leap forward and become an interstellar civilization earlier. But if it is malicious, then what awaits the earth and mankind may be destruction, and human civilization will end and disappear into the universe.
Xiaobian once read a science fiction novel, the advanced civilization in the universe in the novel is to send radio waves to all directions of the universe, through the way of casting a wide net to find other intelligent civilizations. If a wise civilization responds to such a signal, then the higher civilization will destroy this intelligent civilization, the purpose is actually very simple, that is, do not want other low-level civilizations to develop into high-level civilizations, thus threatening their own supremacy in the universe.
It can be seen that human beings should be vigilant against extraterrestrial civilizations, and we should not reply to the suspected alien civilization signals found. It is the continuous development of human technology, when we are really strong, become an advanced civilization, and then go to the depths of the universe to explore and communicate with other civilizations. Weak countries without diplomacy are also adapted to the cosmic civilizations, and low-level civilizations have no choice in the face of high-level civilizations.