Urban Sims

How big is the universe?

More than 10 billion light years.

How big is the Milky Way?

One hundred thousand light years in diameter.

How big is a galaxy?

Not big, the radius is about one light year.

But even for a short distance of one light year, the Feitian flew for nearly three years at a low flight speed.

Why can't we hurry up and accelerate directly to the maximum?

Mainly for the safety of the spacecraft.

Because there is a ring of asteroid belts 40 to 50 million kilometers away from the Bera star, there are many space meteorites. Even if the density is relatively sparse, the speed of the meteorite is very slow, and the probability of collision is very low, but the Feitian is still At a speed not exceeding 0.2 times the speed of light, within a few minutes, through the asteroid belt.

The asteroid belt is further away, more than a billion kilometers away, there is also a material belt, called the "Kerber Belt", which contains many frozen meteorites and asteroids. There are more meteorites, but the density is also more. Small, not very threatening, so Feitian didn't slow down much, so she crossed the Cooper Belt.

The next long journey was relatively safe and smooth, but Feitian still dared not to maximize the speed after accelerating the speed to 0.40 times the speed of light.

Because there is a band of matter near the central star one light year, called the "Alter Nebula", which is the material that is thrown to the outermost periphery after the supernova explosion, mainly some hydrogen molecules, and some The frozen mass of matter is very low in density, and it is difficult to find its distribution even under the weak star light.

When passing through the Oort Nebula, Sugaru must be careful to avoid hitting the mass of matter-even if it is only the size of a baseball.

The radar system is turned on at full power, and Gu Fan, the weapon officer, enters the best shooting position. Once a more threatening frozen meteorite appears in front of him, he is immediately destroyed by a high-energy laser!

"boom!"

"boom!"

"boom!"

The shell of the spacecraft came with bursts of sound, subtle and crisp.

If you look under a high-magnification microscope, you can see that in the Oort Nebula, some small molecular substances are colliding with the force field alloy of the outer spacecraft of the spacecraft, and they are even colliding with each other on the surface of the spacecraft. The "spark" of the regiment seemed to explode.

In fact, this is an explosion. The Feitian at 0.4 times the speed of light. Even if it collides with a stationary atom, the huge relative speed is equivalent to completing a collision of low and medium energy levels in a particle accelerator. It can even disperse the nucleus. .

Fortunately, the outer shell of Feitian is made of a force field alloy, and a layer of high-strength electric field will be attached to the surface. After the negatively charged electrons hit this layer of electric field, it will be absorbed, and the positively charged atomic nucleus will be Bounce (photons will also bounce), thereby avoiding bombardment of external nuclei and causing damage to the surface of the spacecraft.

However, this layer of force field can provide good protection when the speed of the spacecraft is less than 0.5 times the speed of light and the impact density is small. Once the speed of the spacecraft exceeds 0.5 times the speed of light or is hit by a high-density object, the force field alloy of the spacecraft shell cannot Resist, the hull must be damaged.

This is the reason why it is difficult for an object to break through the speed of light under conventional dynamic conditions. The faster the speed, the greater the energy that needs to be given. In a space where the material is scarce, collisions with extremely trace elements result in greater destructive power.

In addition, there is a ubiquitous "gravitational field" in the universe. In this gravitational field, the faster the speed of the moving object, the greater the mass, and the increased mass will slow down the moving speed of the object. So that it can never break through the speed of light.

The combination of these factors leads to the conclusion that the speed of any object cannot exceed the speed of light.

This is the "speed barrier".

The barrier of speed of light cannot be broken through, but it does not fully represent that human beings cannot achieve flight beyond the speed of light.

For example, if there is a curvature engine, it can make the spaceship in the twisted space and time, like people walking downhill, "slide" forward, and change the space to achieve super light speed flight.

Theoretically, the curvature engine can achieve super-light speed flight, but how? What is the specific principle? Scientists of the Blue Star Federation have not mastered it, and haven't even touched a door ... Science is not imagination, not a movie or a novel. Every leap in science progress requires a long exploration.

And countless failures accumulated.

"The Feitian has passed through the Oort Nebula and entered an absolute vacuum."

On this day, according to the monitoring data, the spacecraft Zhinao reported.

"It's finally out of the range of the Bora Galaxy!"

Yunxing River breathed a sigh of relief. Within the influence of the star, he always had a feeling of being bound by fists and feet. Now the Feitian flew out 1 light year away. In an absolute vacuum area where only dim starlight exists, the spaceship can accelerate to the fastest speed.

"Pilot, have you calculated the route? Have you calculated the best route for more than two years?" Yun Xinghe asked.

"Alright!"

Pilot Berekov opened the projected star map, and his finger drew a smooth, curved arc in the air, with a bright face: "Follow this route and reach the Omar Nebula, we can save 11 days. , And 0.4 / 10000 fuel, which is the most economical route. "

"11 days?"

Sugaru in the driving position pouted, shook his head and said: "Brother Berekov, our voyage is 186 years, you helped save ten days?"

"Thousandths of a tenth of a percent of the fuel, I used up the power lever in my hand for a few minutes. What is the province?"

Sugaru's face was full of disdain.

"Drive your spaceship, don't talk nonsense!"

Yunxinghe glared at him and turned his head to Berekov: "Don't care about him, let's introduce the best route into the intelligent driving system. The spacecraft will start to accelerate immediately.

"Yes, Captain!"

After Berekov introduced the route into the driving system, Yunxing River issued a command: "The chief engineer pays attention to the working state of the engine, and the helmsman starts to accelerate!"

"Yes!"

"Yes!"

After the output power of the material reactor increased, Sugaru looked excited, and his hand pressed hard, and the power rod was pressed down by him.

A strong sense of pushing back came from the back.

"The spacecraft is accelerating. The current acceleration is 1G, 1.5G, 2G ... 7G, 8G, which has reached the maximum."

"The current spacecraft speed is 0.4000012 times the speed of light, 0.4000014 times the speed of light ..."

"Oh ~ Accelerate! Accelerate!" Seeing the speedometer, the speed of the spaceship was increasing, Sukaru yelled, very excited.

However, the acceleration of 8G is equivalent to the weight of eight people pressing on themselves. Everyone feels a bit uncomfortable. The male players may be okay, but for the weaker female players, they are insisting on hard.

"Meiqin, Aijia, Qiaoqiao, this acceleration will last for 100 hours, do you all insist on living?"

"Hold on." Xianglan Meiqin said softly.

"What is this degree, the old lady has also played more exciting." Ai Uehara's face relaxed, this level, as a repairman and female man, she really lived.

"Brother, I did." Yun Qiaoqiao's face was pale and fair. She was the weakest of the three female team members. Even though she had passed rigorous training before boarding the spacecraft, she was under 8G load for a long time. In terms of, there are indeed certain challenges.

"The chief engineer and the helmsman reduced the acceleration of the spacecraft to 6G for a duration of 50 hours and accelerated in three times." In order to take care of the female players on the ship, Yunxinghe adjusted its acceleration strategy.

"Yes!"

After a while, everyone's burden has been reduced a little, and they have become more comfortable.

...

A month later.

Feitian reached its maximum speed-0.55 times the speed of light.

Three main engines are shut down, and two low-power engines are started every ten hours to keep the spacecraft roaming at a constant speed.

Before going to sleep in the dormant warehouse, Yunxing River and all the crew intend to record a video and send it to the relatives on Bura Star to report on safety.

There is a large quantum communication relay base station in the star field that is just 0.5 light moons away. Through this relay base station, the recorded video can be transmitted to Bura Star within 2 seconds, and because of the short distance, the information There is also no limit on the amount, as long as it does not exceed 1G.

So using this last time, I can express the opportunity to miss my loved ones unrestrainedly. Each of the ten crew members on the Feitian spoke in front of the camera for more than half an hour, making various grimace, selfies, and teammates. Interactive, and finally use high bit rate format, after compressing the video, the amount of information is only 0.8G.

Before sending the message, because the video has to be marked with time, and the time on the spacecraft at this time is September 11, 1531, 9:48:32, Yunxinghe subconsciously entered this time into it, first officer Lan Xiulong walked When he came over, he shook his head suddenly and said, "No, this time is wrong."

"What's wrong?"

Yunxinghe raised his head and asked suspiciously.

"The speed of the Feitian is now 0.55 times the speed of light. According to the time expansion formula, our time should be expanded by 1.156 times. That is to say, we spent a day in the Feitian and 1.156 days have passed outside. We are about a month. Before entering this speed, the outside world should have passed 34.68 days. They may have been September 15th and 6th. "

"I almost forgot this ~ www.readwn.com ~ Yun Xinghe patted his head and immediately modified the video recording time.

In fact, the clocks in Feitian will be adjusted every once in a while, especially the time of their hometown. In the past three years, they have adjusted dozens of times. By now, the time difference accumulated by the two clocks has exceeded 100 days.

According to the theory of relativity, the faster the moving object, the slower the flow of time. If the speed of the spacecraft can reach 0.999C, the time will expand by 22.36 times. The closer to the speed of light, the greater the rate of time expansion.

This is a normal physical phenomenon, especially for astronauts who are active in space. Time has slowed down, and their aging speed will be delayed relative to the outside. Those who want to go will feel more than expected Arrive early.

But for relatives, the faster you run, the faster they age and the faster they leave you.

In this respect, time is unfair, as if you are joking with you and teasing your perception of common sense.

But this is the law of physics, and this is the law of space-time.