At the end of the 21st century, human science and technology came to a plateau and could not break through, and Cheng Lao put forward an idea at that time, that is, to explore the universe. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"Actually, this exploration of the universe, interstellar crossing, is itself a gamble, and we must also gamble, because there are things in the universe that we humans do not know, and our earth is almost already known, so my method is to gamble, there are always exists in the universe that we do not know.

And this interstellar crossing was the highest technology of human beings at that time, and this technology was naturally Mr. Einstein's top design, which is e=mc'2, that is to say, we need to use speed, high-speed cosmic movement to carry out interstellar crossing, and more simply, to use the speed of light to do crossing!

This speed is very low now, but at that time, it was the highest technology of mankind. ”

"Wait." Yuan Fei had a question, "Can human beings fly at the speed of light with the help of technology?" ”

"No!" Cheng Lao replied: "At that time, we human beings could only move forward at a speed close to the speed of light, and we could only approach, but we could not fully reach it, and that was because of ......."

"This ship is very light?" Yuan Fei interjected again.

"That's right! That's it! Cheng Lao nodded, and continued: "This spaceship only weighs one gram!" ”

That's right, that's what it was, that's how it was.

According to Mr. Einstein's theory, then energy is conserved, and there is such a relationship between velocity and mass, and when the velocity reaches extremely fast, the weight decreases. Otherwise, it would require a lot of energy, but unfortunately, it won't be easy.

Cheng Lao continued: "This is actually Mr. Hawking's idea, he envisioned this spaceship close to the speed of light very early, but in his time, we humans still couldn't make it, but later, in my time, at the end of the 21st century, we can make it." ”

"But it's only one gram." Yuan Fei asked, this is normal, that spacecraft only weighs one gram, so what can it hold?

“dna！” Cheng Lao gave the answer!

DNA, deoxyribonucleic acid, which is our human genetic material, and this thing ......

Yuan Fei finally understood!

A one-gram spaceship can't carry anything, but we humans are very smart, we put a piece of genetic material on it, this kind of thing is heavy enough, and this thing can make human beings on another planet, maybe born!

But it's not just DNA......

"In addition, there are some codes attached to the proteins attached to the DNA carrier, and these codes record the location of our earth, some civilizations in the region, and in addition, the time ...... of the earth."

Time, time again!

Such an important spaceship, and this thing is also recorded on it, which is really ......

Cheng Lao continued: "Time is the most critical, in that era we understood that the time on each planet will not be the same, so we burn time like this for only one purpose, that is, to hope that if the humans who can appear, that is, the humans from other planets, they can come back to us." ”

"Come back?" When Yuan Fei heard this, he was a little confused.

"Quite simply, because if we don't know our time, then the aliens can't find us." Cheng Lao continued: "Yuan Fei, have you read the book "The Three-Body Problem"? ”

"I've seen it." Yuan Fei had no choice but to answer.

"Actually, there is a huge bug in "The Three-Body Problem", that is, in the second dark forest, the method that Luo Ji used to save the earth. That's right, the kind of star map he made, that is, he experimentally used to test whether there are other civilizations in this universe, that thing, is the biggest bug, because even if the universe is really as "The Three-Body Problem" says, the universe is a dark forest, in which many civilizations hunt other civilizations like beasts, then, according to the practice in that book, it will not be successful, the reason is very simple, you can understand it now......"

Yuan Fei thought about it for a while, and then understood, "Time is different. ”

"That's right! The time is different! ”

Cheng Lao then explained, that is, every planet revolving around the star in the universe cannot be the same in terms of time, so since the time is inconsistent, how can we find the cosmic orientation described by another planet?

There is an unavoidable condition in this, and that is the homogenization of the universe......

The universe is a very strange place, although it is not the same place, but the universe is very homogeneous, there are star systems about 3-5 light years, that is, small galaxies such as the solar system, and there are similar galaxies like this 3-5 light years around.

Then, this is very interesting, because in such a state, then when the cosmic orientation marked by the star map is destroyed by another civilization, then there is only one possibility......

That is, in the vast universe, there must be a civilization of such a planet, they can fully understand this star map, and the position of the planet marked on this star map will move with the expansion of the universe, and when this planet civilization receives this star map, they must observe the star map composed of the moving planets at this point in time.

See, this is a huge logical error, because the means of transmission described in the book, the speed of light, also takes years to reach the planet with civilization, and that civilization begins to observe, and what they want to observe is this star map, which is what it used to be, because the planet in that star map has changed in the past few years, and it is not like that.

The planets are moving, the stars are moving, the galaxies are moving, the distances between them are changing, so ......

There is another way, that is, the star map sent by Luo Ji needs to be marked with time......

Then, it brings another problem, that is, that civilization needs to understand the time of our earthlings, you must know that our time, the time of that alien civilization, is set by the people on the planet, and it is impossible to be consistent.

Therefore, if the universe is really a dark forest as depicted in "The Three-Body Problem", then, after the earth is discovered by a powerful alien civilization, we humans will not even have a chance to scream.

Because other alien civilizations can't find you at all, and they don't know what you're shouting!

Of course, Yuan Fei didn't mention the means of emitting this star map, why didn't that powerful alien civilization follow the signal and find us like a three-body man......

So, what can that 1-gram spaceship bring to mankind?

"Yuan Fei, you would never have imagined what kind of ...... this spaceship produced" Cheng Lao's voice became different.

"Cheng Lao, don't you TMD say it quickly!" Yuan Fei wanted to punch his brain...... (To be continued.) )