Chapter 176: Warp engine, wormhole technology! How to get out of the Milky Way.

In Zhuge Liang's imagination, Tianmu continued to introduce the Milky Way.

[The Milky Way is mainly composed of the galactic disk, bulge, halo and corona. ]

[The bulge in the center of the Milky Way is a spherical part where the stars are most densely concentrated.]

[Contains a huge number of stars and extremely massive black holes! ]

[According to preliminary estimates, the mass of the black hole at the center of this Milky Way galaxy should be more than 400 million times that of the sun! ]

[Our solar system is 2.6 light-years away from the black hole at the center of the Milky Way.]

【It belongs to the suburbs of the Milky Way. 】

【Just as the earth revolves around the sun. 】

[The sun also revolves around the Milky Way along with the entire solar system. ]

【Since the birth of the sun, it has completed more than twenty revolutions. 】

[It’s just that because the Milky Way is so huge, it takes the sun more than 200 million years to orbit the Milky Way once! ]

[The orbital speed of the solar system is very long. ]

[This is partly because the Milky Way is too huge. ]

【On the other hand, because the speed of the solar system is relatively slow, the orbital speed is only 250 kilometers per second, so the revolution time will be particularly long. 】

……

[Now, we already know how big the solar system is and how big the Milky Way is. ]

But what if humans want to travel between galaxies, or even beyond the Milky Way?

What price will I have to pay?

[If you take a commercial airliner and fly to Neptune, the outermost planet in the solar system. ]

【It will take more than 490 years.】

[As we have said before, there are the wider Kuiper Belt and Oort Cloud outside the Neptune system.]

【Suppose we have mastered the technology of flying at the speed of light at this time. 】

【Then we can fly at the speed of light, 30 kilometers per second, and leave the edge of the solar system. 】

[The nearest other star to us is Proxima Centauri.]

[Proxima Centauri is a triple star system, also known as a three-body star. ]

[It is a very busy planet in science fiction works. ]

【The Trisolarians are coming to Earth from Proxima Centauri. 】

【The Wandering Earthlings are also heading to Proxima Centauri. 】

[It is indeed very close to us.]

Zhuge Liang became interested.

"It's very close? How close? Can we humans reach Proxima Centauri?"

"Trisolarans? Are they people from an alien world?"

"Since they are called Trisolarans, why don't we humans on Earth call ourselves Sun People?"

Zhuge Liang was very interested in astronomical knowledge.

【Only 40 trillion kilometers.】

[It would only take more than four years at the speed of light to arrive. ]

[And if we don't know the speed of light, but use Voyager 1's speed of 17 kilometers per second as a reference. ]

[Then it will take 75,000 years to travel from the solar system to Proxima Centauri! ]

[This is far beyond the human lifespan.]

[Even longer than the entire history of human civilization! ]

[So if you want to truly travel within the Milky Way, or even beyond the Milky Way, you still need to increase your speed to the speed of light. ]

[But we know that even at the speed of light, it would take more than 80,000 years to fly out of the Milky Way.]

【Humans can’t live that long. 】

【Fortunately, according to Einstein's theory of relativity. 】

【The faster an object moves, the slower time passes. 】

[If we could reach the speed of light, we could complete a flight of thousands or tens of thousands of years in a relatively short period of time.]

[This way, the distance that humans can fly is greatly increased. ] [The speed of light is indeed very fast. ]

[But on a cosmic scale, this is obviously not fast enough! ]

[Our human lifespan is so short that even if time is slowed down by the speed of light, we cannot survive.]

[We have to find a way to exceed the speed of light! ]

[So there are two other hypotheses, which have become common methods in science fiction. ]

[They are warp drive and wormhole travel. ]

[The warp engine, in simple terms, compresses the space in front of the spacecraft and stretches the space behind it.]

[Realize faster-than-light travel without exceeding the speed of light.]

[A wormhole is the folding of space-time in two different regions of the universe.]

[A space-time corridor is formed in the two folded areas. ]

[You can instantly travel from one time and space to another. ]

[But up to now, both imaginary numbers and wormholes are only a theory, a conjecture, and there has been no progress. ]

[And the speed of light is still a distant goal for humans. ]

[It can be said that with the current level of technology, it seems impossible for humans to fly out of the Milky Way. ]

The curtain of heaven ended here, cruelly announcing that with the current level of human beings, it was simply a dream to fly out of the Milky Way.

Fortunately, the current audience obviously knows this and is not disappointed.

"Danmu: Out of the Galaxy?"

《First, pass the solar system! 》

"It's too difficult. It's too difficult to get out of the Milky Way."

Is there hope for controlled nuclear fusion?

"No hope. Controlled nuclear fusion can theoretically reach 10 to 15 percent of the speed of light. Taking into account the effect of contraction, it would take 29 years for astronauts to reach the nearest star, Proxima Centauri."

"Flying sideways is too far, why not just fly upwards?"

《Discharged from hospital!》

"What kind of stinky little brother is the Milky Way? In front of the Laniakea Supercluster, the Milky Way is nothing but trash!"

"If you want to fly out of the Milky Way, you have to reach superluminal speed, but that would at least be a Level 2 civilization. Humanity's current Level 0.7 civilization is far from enough."

"It took a lot of effort for the Trisolarans to come to Earth, so the Earthlings can just go to bed!"

"I earn 3000 yuan a month, but I just like watching this kind of cosmic video. Am I normal, brothers?"

"Watching the universe video every night is the same as opening NetEase Cloud Music every night."

Why do we have to fly out of the Milky Way? Isn't the Milky Way enough for human beings to travel?

"Andromeda is about to collide with the Milky Way. If we don't escape, humanity will be doomed!"

The comments were heatedly discussing and expressing their feelings.

Ancient people were also amazed by the vastness of the Milky Way.

Many people will suffer from sleepless nights after seeing and hearing that the Milky Way will be destroyed!

Even Liu Bang couldn't help looking at the sky.

"My worries are actually true?"

"What kind of creatures are the Trisolarans who came to Earth?"

"And is the collision between the Milky Way and Andromeda inevitable?"

"How curious!"

The ancients were still immersed in the vastness of the universe.

But a new sky soon appeared.

The sound of swords, weapons and horses, and the sound of killing shook the sky.

In the lens of the sky, there are grasslands, deserts, the Great Wall and countless cavalry.

Bringing the ancients back to reality.

【Throughout history, it has always been the northern nomadic peoples that went south to rob the Central Plains dynasties.】

[So, were there any dynasties in the Central Plains that robbed nomadic peoples? ]

(End of this chapter)