The Magician of Clow

Chapter 1191 Special Chapter The Distance From Thoughts to Starry Sky

"In fact, if it's just exploration, it actually started when the first satellite was launched,"

Sitting around a bonfire under the magnificence of the Milky Way on a high-altitude island-like mountain top, when Fangran asked, Kerim replied with a smile,
But he could guess that the "exploration of the universe" he said should be able to travel between stars, and he smiled helplessly:

"However, if it refers to what you think of Fangran, under the foreseeable future development, it will definitely not be realized within a few centuries, and the time required for the follow-up cannot be predicted."

After hearing his rigorous answer, Fangran nodded and asked a very straightforward question:
"Is it because spaceships can't be built?"

"Hahaha, that's right."

Hearing this, he couldn't help laughing out loud. Kerim raised his head and looked up at the prosperous starry sky above his head.
But it was also the first time for him to see such a clear and beautiful Milky Way with his own eyes.

"But in the final analysis, we still know too little about the universe, and there are too many unknowns. As a result, we don't even have theoretical knowledge before we can create something."

"And in the face of its huge size, it's so small that it's helpless."

Speaking of this, Kerim lowered his head and looked at Fangran with a chuckle, talking a little bit about the hugeness,

"In the theory of relativity, the speed of light is the limit of the speed of the universe, but the size of the Milky Way is measured in [-] light-years, and the Local Group of galaxies it belongs to is measured in millions of light-years,"

"And on top of that there's the Virgo supercluster, and the more advanced Laniakea supercluster, and other superclusters of the same class."

At the same time, I also looked at the bonfire in front of me and stated the insignificance.

"But we don't even have the theory of a vehicle that can reach the speed of light, let alone go to the nearest star a few light-years away,"

"Even activities in the solar system are difficult to achieve."

But Fangran listened with a cute face. He just barely knew the Andromeda galaxy, and this was the first time he knew the name of the superior of the Milky Way in the universe.

On the scale of one hundred thousand or one million light years, countries, economies, wars, earthquakes and tsunamis... It seems that everything seems small when compared with an astronomical unit.

"Is no one studying it?"

After thinking for a while, Fangran asked simply. Every time he chatted with Kerim, he would be bothered by his lack of knowledge and couldn't ask any decent questions.

But perhaps because of this, he enjoyed chatting with Kerim,

It may be the yearning of the scumbags for the top students.

"It is mainly limited by the current level of scientific theory, but there are also some complicated reasons for this,"

As for Fangran's curiosity, Kerim still answered with a smile, and then continued to explain softly and gently:
"The research and development of science and technology needs a purpose. The emergence of rockets during World War II made the great powers feel a sense of military crisis, so they competed for talents in the form of a space race,"

"The aerospace technology during that period advanced by leaps and bounds, and the end of the Cold War naturally slowed down a lot, and more people focused on research in other fields."

Just as Fangran likes to chat with him, he also likes this kind of small talk. Compared with the knowledge that is used as a tool,

Kerim was even more happy to answer the curiosity of his most precious friend.

"After all, to the extent that global resources have not been fully developed and utilized, and space navigation has not yet been considered, under the factors of politics, capital, and productivity,"

"This field is still in the development and exploration of human beings on the premise of social prosperity."

Speaking of which, when he saw Fangran's face of 'ohhhhhhhhh', Kerim chuckled at him and added:

"If aliens appear one day, or if the life of the earth is hanging by a thread and we need to grasp the life-saving straw of spaceflight, we may soon enter the era of interstellar navigation."

"No, I always feel that I may not live to that time"

Hearing Kerim's 'comfort', Fangran spoke helplessly, but soon he looked up at the beautiful Milky Way above his head and laughed again,
I couldn't see the disappointment at all, but let out a happy voice of anticipation.

"Isn't space travel unrealistic yet?"

"Although it is still far away from the deep space level, there are still some more realistic ideas at close distances."

Li Ze, who was also sitting on the tree stump, fiddling with the bonfire with the branches and listening quietly all the time, spoke at this moment, and Fangran, who was aroused by the novelty of shaking his upper body forward, asked:

"Hey! More realistic? What is it?"

"Like a space elevator."

"Space elevator?"

Hearing Li Ze's answer, Fangran first thought of the 'Metal Giant Pillar' that he forgot to see in which work, and his eyes flashed with curiosity:
"Isn't this something made up in the movies? Is it useful?"

"Very useful"

After repeating Fangran's words, Li Ze pondered for a while before speaking slowly:
"It should be said that it has an epoch-making effect."

Knowing Fangran's level better, Kerim gave him a more detailed explanation,

"Based on the current aerospace level, the most troublesome thing in entering space is to overcome the gravity of the earth. For this reason, most of the rockets are fuel for acceleration, and there are very few parts that carry cargo and people,"

Recalling the papers he had read before, he gave a simple and clear example:
"It costs about $[-] to send a kilogram of payload into space, even if it's very economical, and it costs at least millions of dollars to send a person,"

"But if there is a space elevator, the price can be reduced to one percent, of course, not including the cost of the elevator itself."

Eh! ?so cheap?
While surprised by this, Fangran heard Li Ze say something more profound.

"Easier way to enter space means that people can transport resources more easily, build space bases more easily, and acquire knowledge and theory about space more easily,"

"Realize the first step for human beings to leave the cradle, and the first step towards interstellar travel."

Listening to their explanations, looking at the starry sky above, imagining a building that goes straight to the sky, people can go straight to space by sitting on it,
Fangran looked at Lize and Kerim, feeling incredible surprise and asked:
"Is this really more realistic? How much weight does such a tall building have to go straight to space, and how much support does it need to stand on the ground?"

"No, the design theory of the space elevator does not require ground support. Like a geostationary satellite, it relies on gravity and the inertial centrifugal force in a synchronous orbit."

"Eh?"

Hearing Fangran's voice, he knew that he must not understand. Li Ze turned on a projection on the bonfire surrounded by the three of them, and drew two nested circles on it with his fingers, giving him the basis of a simple graphic explanation. principle.

"Assuming the viewing angle is above the North Pole, this circle is the Earth's equator, and the outer circle is the geosynchronous orbit."

"The geosynchronous orbit is the object on this high orbit, because the gravitational force and the centrifugal force are equal, it will maintain a relatively stationary orbit with the earth."

I know this!
Fangran uttered a stubborn cry in his heart that he had not forgotten all about high school physics for his concern for Klimt Science
(End of this chapter)