Jiang Yu's mission was much beyond Rediaz and He Shanqi's expectations. He Shanqi simply asked the doubts in his heart: "Light-speed spacecraft?"

Rediaz thought briefly and said, "I understand. As you said just now, civilization No. 2 can be seen everywhere in the universe, and the Three-Body Civilization is more like a backward civilization than civilization No. 2.

"We are not even a backward civilization like this, so we naturally have to leave a way out for ourselves: run!"

Jiang Yu smiled and nodded: "That's the reason."

He Shanqi sighed: "On the size of the universe, humans are so weak!"

Jiang Yu said helplessly: "All humans have a strong sense of self-awareness, all from the earth.

"On Earth, humans are indeed kings, but they are just 'Kangtou King'."

Seeing that Rediaz didn't even understand what "Kangtou King" means, Jiang Yu changed his noun to express it.

Jiang Yu and Rediaz usually communicate in English, while the official language of the Solar System is Chinese. Since the simultaneous translator, scholars like He Shanqi can no longer speak English.

Now the conversation between the three people has to use a simultaneous translator, otherwise He Shanqi would not know what Jiang Yu said to Rediaz, and Rediaz would not know what Jiang Yu and He Shanqi said.

Jiang Yu didn't know much about Rediaz's motherland, but now it seems that people there should not sleep on the kang, at least Rediaz has never slept.

He Shanqi was born on Mars, so he didn't know what a kang was.

This cultural misunderstanding made the atmosphere of "blind spot No. 1" a little relaxed.

He Shanqi said: "I am not questioning the plan of the wall-faced person, I just think it is not feasible."

Seeing Jiang Yu waiting for his further explanation, he cleared his throat and continued: "Theoretically, there are three types of light-speed spacecraft.

"The first is to master the mystery of the time dimension and go directly to the 'outside time'. For external observers, this spacecraft is running at the speed of light.

"The second type is to use the fourth-dimensional 'cutting shortcuts'. We can imagine that if you draw a circle on a piece of paper, it will theoretically be difficult for two-dimensional creatures in the circle to go outside the circle.

"But when the two-dimensional creatures in the circle master the method of entering three-dimensionality, they can easily jump from the inside of the circle to the outside of the circle from the third dimension.

"We are the same in three dimensions. The distance between one point and another in the universe seems very far away to us, but this distant feeling may be the illusion that the 'drawn circle' gives us.

"The distance between these two points may be very close in four dimensions. As long as we master the method of using four dimensions, some distant distances will become close to us.

"The third method is to use acceleration to achieve light speed travel. This method is the only opportunity we have now to achieve, but it consumes a lot of energy.

"Maybe collecting all the energy in the solar system may not be enough to consume a fleet of light speed.

"I believe that even people who are not majoring in physics should understand that the first and second methods are impossible to achieve now, and the third method is also very difficult.

"That's why I say that in terms of current technology, it's too early to talk about light-speed spacecraft."

Rediaz immediately asked: "Then how long will it take for us to start researching the light-speed spacecraft now to come out?"

Obviously, he immediately realized the importance of the light-speed spacecraft. Jiang Yu was sure that Rediaz didn't know anything like "two-way foil".

But he could keenly realize that the light-speed spacecraft may be the safest way for humans to escape from advanced civilization attacks.

As long as some people can escape, they will "stay away the green mountains without worrying about burning firewood."

He Shanqi frowned and said, "I guess it will take about two centuries. The first century is used to theoretically determine how to build a light-speed spacecraft, that is, to determine a feasibility direction.

"In the second century, the theory is applied to technology, and after multiple experiments, the light-speed spacecraft can be obtained."

Jiang Yu sighed. Yun Tianming is worth it here. He saved time for human light-speed spacecraft career!

Thinking of this, he smiled and said, "What if I give you the direction?"

He Shanqi and Rediaz looked at Jiang Yu in horror and surprise.

Jiang Yu asked He Shanqi: "You haven't thought about the curvature spacecraft?"

He Shanqi frowned and said, "At present, curvature is only theoretically conceptual, and it has not yet been found evidence of its existence in the universe, let alone using curvature to create a light-speed spacecraft."

"I know the concept of curvature." Rediaz said with some confusion: "But how to use curvature to reach the speed of light?"

He Shanqi gave an example: "For example, if we draw a midline on a piece of paper, and point one point at the same position on the left and right of the midline, then the distance between these two points is ten centimeters.

"But when we fold this piece of paper in half with the center line, the distance between the two points will be infinitely close.

"But one thing to note is that in theory, the speed of a curvature spacecraft has always been called the 'pseudo-speed of light' because using curvature navigation will not cause time expansion.

"For example, we are going to the three-body galaxy four light years away. If it is a real light-speed spacecraft, it will arrive in an instant.

"But the curvature spacecraft did not break the dimension of time. When it arrived at the Trisomy Galaxy, it was already four years later, so it was called the 'pseudo-speed of light'."

"It's a bit like the second light-speed spacecraft you just mentioned."

He Shanqi shook his head: "It's different. The curvature spacecraft is to create the closest distance from one point to another, and the closest distance of the four-dimensional world is there, and it can be used as long as it is found."

Jiang Yu said shockingly again: "The following conversation is top secret, and we cannot disclose it to the fourth person!"

Seeing He Shanqi and Rediaz nodding solemnly, Jiang Yu said to He Shanqi: "Have you ever thought about it? The four-dimensional world no longer exists!"

He Shanqi smiled and shook his head: "Whether it is relativity, quantum mechanics, or the just-in-the-start string theory, it proves that the macro universe we are in is a four-dimensional universe.

"It's just that as three-dimensional creatures, we are born to not perceive the existence of the fourth dimension."

Jiang Yu said: "Didn't you find a way to use four-dimensionality?"

"But theoretically they exist. In many places, only when calculating the constant of the fourth dimension is calculated, the calculation results are consistent with the results we observed." He Shanqi explained seriously:

"Besides, have we used the ring Jupiter particle accelerator to determine the existence of dark matter? Now the academic community generally believes that dark matter is a kind of matter in the fourth dimension."

Jiang Yu didn't understand these things very much, so he could only say everything he knew: "Dark matter may be the 'remain' of the fourth dimension after falling to three dimensions...
Chapter completed!