Deep Space Fleet

Li Zhendong was surprised, but judging by Zhang Yuan's expression, he shouldn't be talking nonsense.

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

Inexplicably, Li Zhendong wanted to seek refuge with the other party.

However, he couldn't lose his face at all!

He added: "What about the dissertation? Have you considered it? I plan to take a postgraduate entrance examination on the spaceship. Undergraduates like us may be at the bottom of society. It's so miserable."

"... I should have passed the GPA, and I can pass the postgraduate exam, but I don't have a particularly good thesis. How can an undergraduate student get a good thesis... It's so annoying! My dad is too lazy to guide me!"

Zhang Yuan scratched his head, not knowing what to say.

If his thesis is successfully published in Modern Science, as long as the written test scores are passable, generally speaking, there will definitely be teachers who want him.

For a journal of the level of "Modern Science", it is not bad for an average university professor to publish one article in a lifetime.

"Have you decided what major you want to study as a graduate student?" Zhang Yuan was a little embarrassed, "I have already submitted a paper to "Modern Science". If it can be published, I should be able to get some interview points."

"What, "Modern Science", you?" Li Zhendong was taken aback again, unable to react for a while.

While the two were chatting, there were bursts of happy screams from the girl next door.

"sun!"

"What a beautiful sun!"

It was the sun rising from the horizon.

Witnessing the Sun at an altitude of several hundred kilometers makes it incredibly bright.

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

If there is no shielding from radiation-proof materials, this solar radiation can easily burn people, and even damage the DNA of human cells, causing permanent damage.

Because of this, human astronauts in the old days were not allowed to go to the sky before giving birth. But now with the improvement of radiation protection materials from generation to generation, there is no such regulation.

There are still a few dark clouds below that are bursting with lightning, flashing like pink carnations in full bloom. Sometimes you can see lightning from different cloud layers in five or six places, illuminating the entire cloud layer.

These views cannot be seen from the ground.

The girls screamed excitedly: "These clouds are so small, they are different from the ones seen on the plane!"

"It's definitely different, the plane is only a few thousand meters high..."

"Kind of like a cotton ball exploding!"

"If we really fall from this height, we will turn into a ball of fire, just like a meteor. We will be burned to death instead of falling to death!" A boy threatened very badly, "Can you imagine becoming The coke scene?"

"ah!"

The chirping and screaming, together with all kinds of panic screams, made Zhang Yuan laugh uncontrollably.

Maybe, when he took the space elevator for the first time, he had the same mood.

In the next few hours, with the substantial increase in altitude, the entire eastern hemisphere can already be seen.

The snow-capped Himalayas are vast and desolate; the reddish-brown swirls above the Karvill Desert carry a kind of primitive mystery; the forests of the Southeast Asian archipelago shine like emeralds...

Very exciting, really exciting!

Looking down on the entire earth, there is a sense of boldness of "the world is in my hands".

The vast earth is really floating quietly in the universe as shown in the photo.

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

The current altitude is 600 km.

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

The earth is big, too big!

Even the largest human building, the "Octagon", is as insignificant as an ant.

But small humans, from this angle, can easily see every outline of the earth clearly!

This strong contrast creates 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 an extent, the tower of Babylon leading to the boundless sky, the incomparably powerful force against nature, really really... incredible!

What is traveling around the world compared to space tourism?

Hearing the amazement of the passengers, Zhang Yuan sighed, "It's so good to be young."

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

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

"It should be Donghua City..."

"Where—the imperial capital?"

"Is that mountain Mount Everest?"

"No, it should be Nanga Bawa Peak."

"That should be Wanwan Island..."

It's a pity that one of the seven wonders of the world, the Great Wall, cannot be distinguished with the naked eye, and everyone feels it's a pity.

Instead, Huawei's P888 mobile phone was able to photograph the Great Wall.

There are also a few wide asphalt roads, because they are in sharp contrast with the surrounding environment, they can be seen faintly, like strands of hair.

The girls were excitedly discussing, taking pictures and cheering.

...

After several hours, the tourists finally lost interest and quieted down again. There is no Internet here, and there is no way to post to Moments. I am in a panic when I am interested but have no way to share it.

"That... handsome guy?"

Zhang Yuan and Li Zhendong looked at each other.

What about me?

It's me!

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

Zhang Yuan rubbed his head, is he already so famous?

The girl across from him glanced 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 the earth and attack the entertainment industry?"

"When did I say I wanted to enter the entertainment industry? I never had this plan..." Zhang Yuan coughed and replied, "I will follow the spaceship and leave the solar system."

"I knew it! The son of a great scientist, how could he do such a boring trick. Haha, I'm not saying that being a star is bad, but the social value created is definitely not as good as that of a scientist. I can post it on Moments to clarify Is this fact?"

"Send it, it's okay."

The girl tapped her 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 question that was easy to answer: "Well, I have a question to ask you, what are those ring-shaped devices that light up outside the window?"

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

"Oh..." The girl half understood.

Zhang Yuan smiled.

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

Think about it, a person pulls a hydrogen balloon to get an upward pulling force, and the hydrogen balloon will receive a reaction force, that is, a downward pulling force.

In the same way, when the freight elevator climbs up the cable track, it will lower the height of the space city. Therefore, it is necessary to rely on jetting to propel the space station into a synchronous orbit again in order to maintain a dynamic balance.

Even if the space elevator has been built, it still needs to be propelled by working fluid to maintain the balance, what a tragic thing.

But this is already the best way to climb the gravitational well, who said that the space elevator is not a rigid body?

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