Chapter 53

Li Zhendong was surprised, but looking at Zhang Yuan's face, he should not be talking nonsense.

Moreover, working on a project with a professor in the University sounds much more reliable than his "game".

Inexplicably, Li Zhendong wants to take refuge in each other.

However, he has no shame at all!

He added, "what about the paper? Have you considered it? I'm going to take a postgraduate examination on the spaceship. Undergraduates like us may be at the bottom of society. It's terrible. "

"... I should have passed the grade point and passed the postgraduate examination, but I don't have a particularly good thesis. Where can I get a good thesis for undergraduates... It's annoying! My father is too lazy to guide me! "

Zhang Yuan scratched his head and didn't know what to say.

If his paper is successfully published in modern science, as long as the written test results are acceptable, generally speaking, some teachers will want him.

It's good for a general university professor to publish one article in his life.

"Have you decided what major to study for graduate students?" Zhang Yuan was a little embarrassed. "I have submitted a paper to modern science. If it can be published, I should be able to add some interview points."

"What, modern science, you?" Li Zhendong was stunned again and couldn't react for a moment and a half.

Just as they were chatting, there were bursts of happy screams from the position next door.

"The sun!"

"What a beautiful sun!"

It was the sun that rose from the horizon.

When you see the sun at an altitude of hundreds of kilometers, you will find that it becomes very bright.

The position of the sun became very accurate, without any halo, emitting dazzling and domineering white light.

If there is no shielding of anti radiation materials, this solar radiation can easily sunburn people, and even destroy the DNA of human cells, causing permanent damage.

Because of this, human astronauts in the old era were not allowed to go to heaven before giving birth. However, with the improvement of radiation protection materials from generation to generation, there is no such provision.

There are several dark clouds below that are exploding lightning, flashing like blooming carnation. Sometimes you can see lightning in different clouds in five or six places, illuminating the whole cloud.

These views are invisible from the ground.

The girls screamed excitedly, "these clouds are so small that they are different from those seen on the plane!"

"It must be different. The plane is only thousands of meters high..."

"It's a bit like a cotton ball exploding!"

"If we really fall from this height, we will become a fireball, just like a meteor. Burn alive, not fall! " A boy was very bad and threatened, "can you imagine turning into coke?"

"Ah!"

The chirping noise, coupled with all kinds of panic screams, made Zhang Yuan laugh uncontrollably.

Perhaps, when he took the space elevator for the first time, he was in the same mood.

In the next few hours, with the significant increase in height, we can see the whole eastern hemisphere.

The snow of the Himalayas is vast and desolate; The reddish brown vortex on the kavier desert has a kind of primitive mystery; The gods of the Southeast Asian islands shine like emeralds

Very exciting, really exciting!

Looking down at the whole earth, there is a bold and unrestrained sense of "the world is in my hand".

The vast earth, like the one in the picture, floats quietly in the universe.

The earth is really round and visible to the naked eye.

The current altitude is 600 kilometers.

According to a scientific survey, at this height, more than 90% of people will have an unparalleled sense of worship for natural science, the motherland and space elevators.

The earth is big, too big!

Even the octagonal building, the largest human building, is just as insignificant as ants.

But small human beings, from this angle, can easily see every trace of the earth!

This strong contrast produces another visual impact. Looking down like a God, everyone has a strange pride. The whole world has been trampled under their feet.

Human beings have developed to such a degree that they lead to the tower of Babylon in the boundless sky and the incomparably powerful power against nature. It's really... Incredible!

What is global travel compared to space travel?

Hearing the exclamation of the passengers, Zhang Yuan sighed: "it's nice to be young."

Li Zhendong nodded in agreement: "too young, too native."

The girls next door are still chirping and excited. They are looking for well-known buildings and natural landscapes on the surface.

"It should be Donghua city..."

"Is there the imperial capital?"

"Is that Mount Everest?"

"No, it should be nangabawa peak."

"Well, it should be curved island..."

It's a pity that the Great Wall, one of the seven wonders of the world, can't be distinguished with the naked eye. Everyone feels it's a pity.

The great wall can be photographed with Warwick's p888 mobile phone.

There are also several wide asphalt roads, which can be seen vaguely because they are in sharp contrast to the surrounding environment, just like hair.

The girls talked excitedly, taking photos and cheering.

……

After a few hours, the tourists finally lost interest and quieted down again. There is no Internet and no way to send a circle of friends. I was so excited that I couldn't share it.

"That... Handsome guy?"

Zhang Yuan and Li Zhendong looked at each other.

What about me?

It's me!

"... handsome boy, are you that, that Zhang Yuan? The one who donated money! You are an astronaut! " The other party looked very excited.

Zhang Yuan touched his head. Has he become so famous?

The girl opposite looked at him and said excitedly: "... At that time, I was just watching the live broadcast. I didn't expect you to be an astronaut. Don't you want to stay on earth and attack the entertainment industry?"

"When did I say I was going to attack the entertainment industry? Zhang Yuan coughed and replied, "I will follow the spacecraft and leave the solar system."

"I knew it! The son of a great scientist, how can he do that boring trick. Haha, I'm not saying it's bad to be a star, but the social value created must not be comparable to that of scientists. Can I send a circle of friends to clarify this fact? "

"Send it, it doesn't matter."

The girl clicked her cell phone and found that there was no Internet, so she had to give up.

She seemed to see that Zhang Yuan was a little embarrassed and asked a good question again: "well, I have a question for you. What are the ring-shaped and bright devices outside the window?"

Zhang Yuan replied, "that's an ion propulsion device. When we reach the geosynchronous orbit, the linear speed is about 3.1 kilometers per second. This part of the lateral linear speed is provided by the electric propulsion engine, which can reduce the lateral deformation of the elevator track. "

"Oh..." the girl doesn't understand.

Zhang Yuan smiled.

In fact, there are more ion engines on the "Tenglong" space city to maintain the orbital height of the space city.

Think about it. People pull a hydrogen balloon to get an upward pull. The hydrogen balloon will be subjected to a reaction force, that is, a downward pull.

Similarly, when the cargo elevator climbs up along the cable track, it will lower the height of the space city. Therefore, the space station must be pushed into synchronous orbit again by spraying working medium in order to maintain dynamic balance.

Even if the space elevator has been built, we still have to use working medium to maintain balance. What a tragic thing.

But this is the best way to climb the gravity well. Who calls the space elevator not a rigid body?

Human technology, in fact, is far from as superb as imagined.