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While billions of people were watching the demonstrations on various electronic devices, the fixed scenery of the lander, the slowly changing scenery of the Mars rover, and the flying scenery of the helicopter, the United Nations was also in a frenzy.

Before, everyone was focused on the live broadcast, which lasted for several hours. Now that it was finally time to travel again, everyone could finally go to the bathroom.

This included most of the ordinary viewers watching the live broadcast.

In the current situation, only scientists would pay attention. Ordinary people just wanted to see the moment of alien contact a few hours later.

That would be exciting.

“Science fiction culture” has developed into a large system on Earth over the years, and there are many intricacies in terms of contact with aliens alone.

For example, a very famous old science fiction film directly used a contact classification as the film's name, which is “Close Encounters of the Third Kind”.

According to the human-alien contact models summarized by people, they are divided into six categories.

The first is zero-type contact, which is a distant sighting. Most of the time, you see alien flying saucers speeding across the sky, or you see strangely shaped aliens from a distance, and then the aliens disappear in the next moment.

Even if you can't see clearly or are uncertain, it's still zero-type contact.

Currently, most of the international sighting records related to aliens are like this.

After that, there is first-type contact, which is a close-range sighting. This type of contact can roughly see the outline of the alien spacecraft and aliens.

Then there is second-type contact, which is when a part of the human body touches something on an unidentified flying object or witnesses residual traces of the touch, which is the kind where you don't see aliens.

Further on is third-type contact, which is the most talked about type of contact.

This method is direct contact between humans and aliens, seeing the unidentified flying object clearly. Perhaps at this time, it can be determined that it is an alien spacecraft, especially seeing the humanoid advanced life forms on board, which is closer than first-type contact.

As for fourth-type contact, that's mysterious. It is communicating with aliens through telepathy, which is the kind of case where “I have been in spiritual communication with aliens for a long time”.

If you want to find evidence, sorry, there is none. We are just communicating on a spiritual level.

This contact model is also not recognized by most researchers.

After all, it's too mysterious.

But there are also people who firmly believe in this contact method.

After all, the contact is an alien. If it's not mysterious, would it still be called an alien?

Finally, there is fifth-type contact, which is when humans use friendly information to contact alien civilizations.

However, this is a classification divided by enthusiasts. Some people not only do not recognize “fourth-type contact”, but even do not recognize this major classification, such as Dr. Hynek, an astronomer who served as a consultant to the US Air Force's “Project Blue Book” for twenty years.

He divided the contact events where people had direct contact with aliens, saw the unidentified flying object clearly, especially saw the humanoid advanced life forms, into three categories.

The first type of contact is when the unidentified flying object does not affect the surrounding things, which means there is no sighting record at all. You really don't know if it came or not.

It's like the previous debate about “are there aliens in the universe”, after all, no one has ever seen them.

Of course, now, this debate doesn't need to be debated. Aliens have already arrived.

The second type of contact refers to the flying object affecting the surrounding things, but without seeing the entity of the unidentified flying object or aliens, such as regular burn marks left on the ground, the appearance of crop circles, and abnormal radiation appearing in places where radiation should not appear.

The third type of contact refers to seeing the alien creatures on the aircraft, including direct contact with them.

Later, some popular newspapers and science fiction novels described details such as some people being hijacked by alien creatures, calling it fourth-type contact.

However, in serious scientific works, these phenomena are generally still included in the third type of contact.

In fact, the movie “Close Encounters of the Third Kind” is not purely third-type contact, nor is it either of the two classifications, but it shows all types of contact.

The climax of the film is the last part, where humans use music to communicate with aliens, and then select civilization diplomatic envoys to formally establish a friendly exchange channel between the two civilizations.

Among a bunch of films about aliens invading the Earth, it is considered a friendly stream of aliens.

Of course, those are just science fiction works. What the plot is like is a pre-written story, and today, humans are going to contact real aliens.

Although it is only through unmanned probes, and then contacting on another planet, this may be a better solution for human civilization.

After all, in many movie plots, after humans encounter aliens, they don't do isolation, don't make plans, don't invite experts, etc., they don't do anything and just rush up themselves, and then…

Then GG is played.

Finally, love defeats the aliens, and the male and female protagonists kiss in the sunset.

So in this case, it is a better solution to use unmanned equipment to explore the bottom first, so that there is a buffer zone between the two sides.

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However, there are also many unsolvable “hard injuries”, which are hidden dangers in the initial contact.

Well, except for Tang Chao, everyone thinks so.

During this flight interval, Tang Chao directly left the mission center, left the live broadcast screen, and fully switched to the United Nations General Assembly site.

Compared to the people who relaxed and then went to find other things, and then called friends and waited to watch the first human contact with aliens, the people at the United Nations General Assembly were more focused. They quickly came back after going to the bathroom.

Now that Tang Chao has left the live broadcast state, they need to quickly communicate with Tang Chao, after all, they are about to contact aliens next, and there can be no mistakes in this.

“Mr. Tang, can you guarantee that there will be no problems on your side?”

The representative of America said very impolitely: “If it doesn't work, I think America can replace Pathfinder Company to conduct this contact. After all, our deep space tracking and control network is the most comprehensive and can ensure the greatest degree of information flow.”

Tang Chao was sitting in the office behind the command center, with several managers and technical supervisors from Pathfinder Company next to him. He didn't care what the representative of America said, and directly retorted: “Okay, if you solve the problem of ultra-long-distance communication delay, you will lead the mission, I have no objection.”

“You…”

The American representative was speechless. That thing is just a theory, no one can solve it. Why should they study it?

Seeing that America didn't speak, the other countries naturally didn't speak either. Only the representative of Tianxia was drinking tea leisurely.

Who made Star Pathfinder Company a company of Tianxia?

Seeing that no one was talking, Tang Chao continued: “Everyone doesn't need to worry about the communication capabilities of this operation. Our Pathfinder has a complete communication satellite network. Although the radar antennas on the ground are not very good, because the unmanned probe ship has a super-sized communication antenna, the requirements for ground antennas are not high.”

“The key issue now is the communication delay. If the communication delay is too long, which leads to unexpected situations in our contact with aliens, such as they think our reply is too slow, think we are neglecting them, and then use force against each other.”

“After this situation occurs, are we going to continue to explain and then obtain friendly understanding? Or are we going to directly go to war with the other party?”

Tang Chao said the difficulty. The representatives of various countries present also frowned, because this is indeed a problem.

People living in the information age find it difficult to imagine the information delay of ancient times, when information was delivered by fast horses, carrier pigeons, and sailing ships. How much would that lag in information delay things?

Not to mention the distant ancient times, just a few decades ago, when people generally still used the postal system to send letters, it is also difficult for young people who can video communicate with the push of a button to accept it.

In the past, people were only exploring Mars, and communication delays had already resulted in extremely low success rates. Now that they have encountered the matter of communicating with aliens, it is difficult enough to guess and decipher the meaning of the language, plus communication delays, that is definitely hell difficulty!