"How is this possible? It's 2029? It can't be.."

"These messages were sent by earthlings 21 years ago? Ha ha! What a cosmic joke! ”

Ruan Lin hurriedly continued to read, and the following contents included: portrait of George H.W. Bush, portrait of Albert Einstein, and landmarks of various countries in the Earth era.

It was a message of peace and goodwill, but it took thousands of years to get here, not the envisaged 21 years.

Ruan Lin didn't want to believe that this was a message sent by the Earth era, in fact, as early as 2010, geoscientists detected a signal suspected to be sent by Gliese 581d, but the University of Pennsylvania in the United States published a research report in 2014, arguing that the signal was just a noise generated by a stellar magnetic explosion, and there was no intelligent life here.

Ruan Lin suddenly smiled dumbly: "Wit, this must be a prank of some civilization!" They got the message, and now they're sending it everywhere! ”

Ruan Lin actually already had some speculations in his heart, but at the moment he has fallen into a psychological mechanism that human beings cannot get rid of, by distorting the psychological activities of individuals in traumatic situations to escape pain, or "denying" unpleasant events as if they had never happened, in order to obtain temporary psychological comfort.

But WIT won't.

"Source of signal transmission: 581d20.3 light-years from Gliese, detailed location: solar system. Estimated time of this information was launched: 21 Earth years ago. ”

In his consciousness, Ruan Lin's smile suddenly froze, and he thought of what the previous pioneer civilization had said that "there has never been intelligent life in this area", as well as the fact that humans have never discovered aliens.

Human beings in the Earth Age have embarked on the path of opposition to distant civilizations: all civilizations want to prove the existence of aliens, and only a small percentage of human beings believe that aliens do not exist, as well as all kinds of bold speculations.

The Yuanguang civilization is eager to prove that there are only them in the universe, and the humans on Earth are eager to prove that there are not only humans in the universe.

The proof of the former failed, the proof of the latter succeeded, but all of humanity did not witness this day.

What a pair of pathetic civilizations!

Ruan Lin whispered again: "Check again, report the credibility of the information." ”

"The positioning is correct, and the emission source is the solar system. The confidence level is 10σ, and the statistical fault tolerance is 1 in 557 billion. ”

WIT sent specific observations to Nguyen Lin, and the results of this analysis are unlikely to be problematic.

Ruan Lin once again experienced the feeling of despair, and the estimated arrival time was accurate - 21 years, the number of message segments was also 501, and after comparing the content of the messages sent with the results of his own inquiry, there was no error.

This is indeed the message that Earth sent towards Gliese 581d in 2008.

Ruan Lin gave up the question, and he manipulated the Hubble telescope, eager to see the familiar blue planet.

In the field of view, there is no familiar and somewhat unfamiliar planet of life in the third orbit of the solar system.

It's as if it never existed.

Ruan Lin felt endless exhaustion, too many things were out of the realm of cognition, and these mysteries may never be solved.

He sighed and said, "WIT, the quantum communication equipment and the radio telescope are preparing to edit the information, and the content is..."

He was about to say what he was sending, but on second thought, it was probably a phishing message to confirm his location.

"Cancel Edit."

At the moment he has the best way to prove it:

The message was supposed to arrive in 2029 and be replied to in 2049.

Unfortunately, there was no news.

Humans in the age of Earth were convinced that there must be intelligent life here, and NASA sent another message to Gliese 581 in 2051, this time on a mission called "Galactic Spam".

They sent the old sci-fi movie "Interstellar" to Gliese 581d.

All that remains to do now is to wait for the arrival of this old film, which, if logical speculation is correct, will arrive 43 years later.

"WIT, we need to stay on this planet for 43 years to keep the fleet refueled."

After Ruan Lin finished speaking, he returned to his body.

He subconsciously twisted his neck and looked at Kan and Tu.

Kan took the initiative to ask, "What were you thinking about just now?" You've been in a daze for a long time. ”

"Your civilization philosophy is to prove that 'there are only your own civilization races in the universe', and if a civilization has not stepped out of its own star field, their concept is to prove that 'there are other civilization races in the universe'. What will their results be? ”

Ruan Lin stood up and closed his eyes: "Play your fantasies, don't be limited by the possibility of reality!" ”

Kan pursed his lips and whispered, "If this civilization is in the same situation as us, they will one day encounter a visit from other strange civilizations. It's like our civilization, we send countless messages to the universe, without exception, there is no response.

Other civilizations may appear in unexpected ways, and even if no one responds, it doesn't mean that other civilizations don't exist. ”

Ruan Lin paced up:

"I'm assuming here two civilizations, which are named 1 and 2.

Civilization 1 and Civilization 2 are only more than 20 light-years apart, and their level of civilization is comparable, and their ability to send and receive information is normal.

1 & 2 frequently send messages towards the universe, eager to prove their civilization ideas! But why, they never found out about each other's existence? Why have they never heard from each other? ”

"There is also a prerequisite that Civilization 1 has already sent a message to Civilization 2's location. In addition, 2 civilizations came into contact with other civilizations many years later. ”

After Ruan Lin said these words, he instantly felt his scalp tingle, even if it was a mechanical body, there was an electric current conducted from his heel to the processor.

Kan's expression became solemn, his skin turned dark blue again, and his neck and claws began to secrete dark blue bodily fluids.

Ruan Lin actually already has an answer, and he wants to hear Kan say it himself!

"Is this our two civilizations?"

Kan raised his head and looked at Ruan Lin with a vacant gaze.

He was also terrified by this answer, and Tu also hugged the hurdle at this time.

Kan's fear could not be eliminated, and he said very quickly: "If all the above conditions are correct, then there is a barrier between civilization 1 and civilization 2, civilization 2 can actually communicate with other civilizations, but civilization 1 is permanently blocked, and the messages they send cannot reach other star fields, and other civilizations cannot detect their existence. ”

"That is, in the eyes of other civilizations. 1. There is no intelligent life in the star field where the civilization is located. ”

Tu, who was hiding behind Kan's back, also trembled and said: "1 civilization can receive the news, but it is just the background noise of the universe, and the truly valuable information has been eliminated by this barrier. ”