Wandering Spaceship in Deep Space Chapter 302: Gravity advancement

"Forget it, let me explain it."

Li Zhendong turned his head, took the microphone, and solemnly explained to the reporter: "What is a cosmic string? A very thin and heavy uniform field, born at the moment the universe opened up, is a linear defect in the phase change! "

Many reporters immediately turned on their recording pens, pretending to be very serious.

"It is divided into two types, one is a straight string that traverses the universe, and the other is a circular string of various sizes. The collection of all the strings forms a network full of the universe."

Theoretically, the distribution of cosmic strings in the universe is a bit like a human neural network, as small as the Milky Way, as large as the Virgo Cluster, the Supercluster of Rania Kea, and even the entire observable universe. exist.

A picture appeared on the screen of the observable universe 96 billion light-years away.

This picture has not undergone any artistic treatment, and any point of light in it represents a galaxy. From a certain angle, the distribution of these galaxies is too much like a neural network.

The reason why the universe forms a network system, instead of all matter being spread out evenly, is because of the cosmic strings.

"The next step is how to use cosmic strings to advance..."

When the cosmic strings were just born, these strings oscillated at a speed close to the speed of light, emitting huge gravitational radiation. But no matter how great energy, in more than 10 billion years, it was still consumed in the form of gravitational radiation.

But there are also a small part of the strings whose energy has not been consumed, because of some special reasons, they are hidden in the space. So there are not many strings that can really be used.

It is difficult for people to directly observe the existence of these strings, after all, this is a one-dimensional thing, only length, no width and height.

"...The cosmic string is very flexible. If a string is tied to the earth, it can accelerate the earth to 3000Km/h in 1 second!"

Hearing this, a female reporter asked curiously: "Professor Li, what you said seems a bit strange...Isn't the cosmic string not participating in electromagnetic interaction, so how should it be tied to the earth?" /

"Even if it can be tied to the earth to produce such a large force, won't the cosmic string break? Strong interaction can't withstand such a force, right? What is it made of?"

Li Zhendong couldn't help but feel a little refreshed under all eyes to become the focus of everyone, but he still pretended to be serious and said: "I'm just making an analogy to let you understand the nature of it."

"As a one-dimensional thing, it does not participate in electromagnetic interaction, even if it is around us, it cannot be sensed. Like a neutrino, it can pass through our body without obstacles."

"So, how do you use it to advance? It can't be the pulling force. The answer is..."

"Gravity!"

"But under normal circumstances, we seem to be unable to feel its gravitational force, what should we do? I just said that it is a one-dimensional topological defect, and we can take advantage of this topological defect."

"Professor Li, what is a topological defect?"

"Simply speaking, it is the defect caused by the topological effect. In the sense of homotopy, there are always defects. For example, there is a certain symmetry group in a system. After the symmetry is broken, there will be symmetry with this broken. The corresponding vacuum."

"...There is a very low-energy transition state from one vacuum to another vacuum. This situation is generally called a soliton academically, which is a topological defect. For a simple example, a ferromagnetic system Because the two ends of the magnetic chip correspond to good ferromagnetic phases, but the direction of m is different, there are two different vacuums......"

Many reporters were upset and complained loudly.

With so many technical terms, it's impossible to understand it, even if you understand it, you can't write it in the report.

Li Zhendong felt very desperate. He turned his head and looked at Zhang Yuan with a smile on his face. He wondered how this guy dealt with the reporters.

"Everyone, stay calm... Simply put, a condensed matter method can be used to reactivate the gravity of the dormant cosmic string."

"For how to do it, you can refer to the original graviton shielding experiment on Earth. There is a certain point in common... that is, the need to break the balance of gravitation. Of course, it is only the gravitational force of a short piece of cosmic string, only A few seconds or minutes."

He drew a simple image on the screen: a spaceship was sailing slowly, and a cosmic string was in front of it. The airship suddenly fired a cannonball, which interfered with the dormant state of the cosmic string in front, making it There started a small vibration, exuding a huge gravitational force.

"But this short period of time is enough. Think about it. If a huge gravitational force suddenly appears in front of the spacecraft while it is sailing, will the entire spacecraft be sucked?"

"Of course, this gravitational force will disappear quickly, but the kinetic energy of the spacecraft, that is, the speed, has not disappeared."

"Then we activate the string further ahead and repeat this process continuously, and the speed of the spacecraft will become faster and faster!"

This is a...new way of advancing!

Now, all the reporters understood.

"Gravitational Propulsion and Interstellar Navigation"

"Letter from the Golden Sun"

"The Humans of Captain Star"

It was only half a day. After the broadcast of this series of special reports, it quickly caused a big wave in the society. The information about the Golden Sun and the gravitational push have naturally become the most talked about topic.

The human beings who were a little slack in the past have renewed their enthusiasm for work!

Similar discussions can be heard on the streets and alleys.

"Kaputan of the Golden Sun, so far away...almost in two directions. The cosmic string in the middle has broken, so we shouldn't make a trip."

"The first time I use the cosmic string to travel far, I should pick a closer star...at least I think so."

"It doesn't make much sense to meet the people of the Golden Sun."

Even Kunlun Mountain has to be changed slightly. After all, gravitational propulsion can be optimized too much compared to traditional working fluid propulsion~IndoMTL.com~ It is no longer necessary to use most of the tonnage for fuel loading. . Therefore, some fuel warehouses in Kunlun Mountain can be modified into industrial areas, living areas, and agricultural areas.

Originally, the fuel quality had to occupy more than 70% of the entire spacecraft, but now it only needs to occupy 20% of the quality. Even, to be more radical, 10% is actually enough.

This is the superiority of gravitational propulsion!

Of course, gravitational propulsion also has certain limitations. Whether it is acceleration or deceleration, it must be carried out near the cosmic string. In this way, the number of stars that can be visited is a lot less, not near every star. , There are all available cosmic strings.

Moreover, the conventional way of advancing is still indispensable. Otherwise, without the cosmic strings, wouldn't the entire spacecraft be able to move?

On the other hand, devices that cause gravitational fluctuations are also under urgent research.

Scientists have discovered a usable cosmic string near Gliese 581. This is definitely great news!

In other words, everything is ready, only the east wind of "Kunlun Mountain" is owed.