After the starport was put into use, the pace of the Dragon Kingdom and the entire human civilization towards the starry sky was accelerated countless times.

However, later generations believe that the key to the promotion of human civilization to interstellar civilization has been truly laid.

Or is it the completion of the interstellar electromagnetic acceleration pipeline.

The 280-meter-diameter pipe is capable of loading super-large starships.

The 100-kilometer-long acceleration duct is capable of accelerating the spacecraft to 15 percent of the speed of light.

Relying on space elevators and electromagnetic accelerators, humans have finally begun to colonize the planets in the solar system.

Since ancient times, the limit of the distance of rule has often not exceeded a month's journey from the national capital to the frontier.

Beyond that, the cost of domination will rise indefinitely.

This is also the reason why the scope of the feudal empire will not expand indefinitely.

It was only in modern times, with the development of radio communication technology, that the dominating category was broken by this law.

After entering the interstellar age, human bases on Mars, Ganymede, and Titan are also subject to such restrictions to a certain extent.

Mars is a little closer to Earth, but it is no longer possible to communicate in real time.

There is a delay of more than 4 minutes between the two.

But with a little patience, it's still acceptable.

Even people on Earth and Mars, respectively, are able to barely achieve video communication.

If you can tolerate a four-minute interstellar delay situation.

But in the orbit of Saturn, the farthest from Earth, even this cannot be done.

From the Earth, even electromagnetic waves travel for 79 minutes.

"Nebula, this is the first time you've left the Titan Star Six research station since you were born, how do you feel?"

On the starship heading from Titan to Earth, a gentle female voice sounded beside a girl with big eyes.

Nebulae are much longer than humans who have lived on Earth since childhood.

Thanks to Titan's lower gravity, the nebula's static height reaches 195 centimeters.

In space, it's closer to 2 meters.

"It feels good, there aren't so many orange-red chemical clouds, and you can see all kinds of stars clearly."

Nebula's soft voice slowly told the joy in his heart.

Titan's living environment is not good, even in the interstellar age of great technological development.

Humans also need to rely on a variety of high-tech devices.

It can survive in an atmospheric environment with a nitrogen content of 98.4 percent.

"This quarterly report of the Society for Life in the Outer Solar System is a rare opportunity for us."

Nebula nodded slightly, his eyes still fixed on the beautiful Milky Way outside the porthole.

On Titan, it's impossible to see these beauties with the naked eye.

She coveted every minute of her time.

A faint electric current flashed through the back of Nebula's head in a long hair of silicon crystals that glowed with a pale blue shimmer.

The implantable prosthetic eye under the skin of Nebula's orbit activated spontaneously, closing her ocular nerve connection.

"I'm about to arrive at the Central Star Port, let's rest for a while."

Losing the beloved beauty, Nebula showed a trace of emotional fluctuation for the first time, and said coquettishly:

"Mother, you're directly interfering with the operation of my system."

Although there has been no major breakthrough in physics, the speed of human beings in the solar system still does not exceed 15 percent of the speed of light.

However, in terms of artificial intelligence and biology, great progress has been made.

Artificial intelligence, which is truly comparable to the logic of human thinking, has long been more than just imagination in science fiction works.

It's really in reality.

Of course, for various reasons, this kind of artificial intelligence is classified as a category of regulation by the Earth Federation that has entered the interstellar age.

But another similar type of artificial intelligence has a much lower level of regulation.

That's digital life.

Many dying human beings live in the online world after digital transformation.

Life in the online world, in the eyes of many, is far better than the material world.

After all, after entering the online world, the original needs of various creatures will disappear directly.

And the incomparably developed entertainment industry can meet their spiritual needs.

It's just that everything has pros and cons.

Digital humans do not have access to many of the rights in the real world.

But because of this, they don't have to take on many of the obligations of the material world.

Even when human digital technology was just being released, there were still some chaotic areas where people took the initiative to end their lives.

Engage in large-scale mass events in the online world.

For these people who have suffered from war, sickness, and famine, living in the material world is more about experiencing pain.

However, Nebula's mother is not the same as these people.

As one of the first accompanying biologists to land on Titan, she has a very high material and spiritual treatment.

According to the normal trajectory, she will have a very bright life.

Unfortunately, during an exploration of the liquid methane ocean, her protective suit was accidentally damaged.

Although the accompanying medical spaceship saved her life in time.

However, direct exposure to Titan's surface environment of more than 100 degrees below zero still caused great damage to her body.

The advanced automated surgical instrument only saved her brain.

After the fact, she applied for digitalization on her own initiative.

"It's going to be a little uncomfortable to get out of the speed of light, and you'll need to be patient for a while."

Nebula's mother said softly in her ear.

It takes almost an hour to accelerate from a standstill to the speed of light.

Decelerating from the speed of light to a stationary state takes even longer, taking nearly three days.

This is also due to the economics of interstellar travel.

In a few days, in the blink of an eye.

The dark blue ion thruster slowly dimmed.

The sound of welcome from the large starport of the Moon Palace slowly sounded inside the spaceship.

"Welcome back to the Earth-Moon System, and the Moon Palace welcomes you home!"

Most of the people on this spacecraft are from the outer solar system.

That is, the vast starry sky beyond the asteroid belt.

Living in low-gravity space environments or on the surface of asteroids all year round.

Therefore, they will not be able to return to Earth in the first place.

Instead, you have to stay on the surface of the moon for a period of time to improve your physical fitness to a certain level.

to be able to take the Earth-Moon shuttle and return to the earth today.

"Nebula, look!"

Suddenly, the mother's usually gentle voice became unusually excited.

"That's the Space Pioneer Monument!"

I saw a pitch-black hexagonal monument that didn't seem to reflect any starlight.

Silently flying around the moon.

"Since Gagarin's entry into space in the twentieth century, all the names of those who have made outstanding contributions to space exploration have been engraved on this monument!"

For human beings in the 22nd century, material needs have been greatly satisfied after technological progress.

People are turning more and more to spiritual pursuits.

And honor is undoubtedly the most important aspect for people.

Being able to engrave her name on the Space Pioneer Monument has been a long-standing wish of Mother Nebula.

It's a pity that she lost her body in the material world due to an accident, and she also lost the opportunity to be engraved on the monument.

Nebula's watery eyes stared out of the porthole at the monument that was much higher than the spaceship.

"I heard that it used to be an asteroid, is it true?"

Nebula looked at the monument the size of Mount Everest and couldn't help but murmur.

"Yes, that was the last generation, when we were just beginning to build on a large scale on the lunar surface."

"It was originally an asteroid that passed by the Earth, but for some reason the angle tilted, and it may hit the Earth."

"And then it was blasted to pieces by the asteroid defense system."

After that, Zhang Xingyang, the legendary scientist at the time, proposed to install a monument in space.

"To commemorate the people who have made great contributions and sacrifices for the cause of space for hundreds of years!"

The monument itself reflects almost no light, but the names engraved on it shine brightly in the light of the stars.

At the front of the monument, there is an ancient man carved hundreds of years ago - Wanhu.

In 1390, with a homemade rocket and kite, he wanted to fly into space.

This is followed by rows of names that are often found in textbooks.

The rows of names represent countless people who have made efforts for the aerospace industry and space exploration.

At the top of the monument is a red flag made with the latest technology.

Even in a vacuum, it does not show any fading.

From the azure home of life, to the gray-white Moon Palace.

Then to the glow of the crimson storm from time to time, and all the way to Pluto, where even the sun's rays were dim.

Red flag, all the time! (End of chapter)