Europa is covered in snow and ice, but it's not desolate.

Especially the location where Lin Xu landed.

All kinds of factories, tall factories, towering blast furnaces, show that this is not a wild place.

And these factories were all built on the major planets in the solar system by various autonomous machines after Lin Xu decided to build 100,000 planetary engines thirty years ago.

Now, with the completion of the construction of the planetary engine, these factories have naturally shut down.

However, the museum that Lin Xu is going to is not here.

It's in the interior of Europa.

In other words, the entire interior of Europa is a huge museum.

Riding the elevator, all the way down, soon a huge museum that occupied the internal space of the entire planet of Europa unfolded in front of Lin Xu's eyes.

Once the Jupiter Museum, in the 23rd century, it was a tourist attraction.

Later, with the departure of human beings, many of the collections in this museum were also taken away.

Just like in the Palace Museum, many of the collections have been brought on the voyage group.

But there are still many things that cannot be taken away.

For example, the architectural framework of the entire museum.

"Is this museum so big?" Lin Xu looked at this huge museum, which occupied most of the internal space of an entire planet.

You must know that Europa is only a little smaller than the moon, and a planet of this size has been hollowed out in half of its entire interior and then used as a museum.

Lin Xu only knew that there was a museum on Jupiter before, but he hadn't heard of such an exaggeration here.

"Master, this was originally an alien spaceship, and after humans discovered this place, they turned it into a museum." Miss Qiu relieved Lin Xu's doubts.

On the way here, she had already consulted a lot of information about this museum, and was ready to answer Lin Xu's doubts at any time.

"Alien spaceship? Has humanity ever been in contact with aliens? Lin Xu was stunned for a moment, he didn't know such important information before.

"Humans had no contact with aliens before setting sail, and what was found here was only a long-abandoned spaceship, which is presumed to have existed for hundreds of millions of years, and everything inside had been destroyed, leaving only an empty shell frame. Later, within this framework, mankind established museums. "Miss Qiu answered.

As for whether humans have had contact with aliens since the voyage, Miss Qiu doesn't know.

"Hundreds of millions of years! In other words, the formation of the satellite Europa is based on this spacecraft with only an empty shell frame. Lin Xu looked at this behemoth museum with his eyes and said with emotion.

"That's right, Europa is based on this spacecraft, which has evolved slowly after hundreds of millions of years of meteorite impacts." Miss Qiu proved Lin Xu's guess.

However, after Lin Xu was silent for a moment, he suddenly spoke.

"Is it really just the hull of the ship? Humanity in this alien spaceship, nothing gained? ”

"In the information I searched, there was no mention that humans had obtained anything useful here, whether it was technology or equipment, except for stones." Miss Qiu replied.

"Except for stones? What is that? Lin Xu asked.

"I don't know, it's not detailed in the information."

"Taiyin, you know what?" Lin Xu asked instead.

Through the communication device in the power armor, Lin Xu can naturally communicate with Taiyin, Yingchao, and Qiming at any time when the body is still on the earth.

"The explanation of the stone in the database has been removed, and I suspect it's some kind of code name." Taiyin replied.

"Codename?"

"Although there is no explanation for the stones, in the Earth's human civilization cemetery plan, three stones are stored."

"Project Civilized Graveyard?" Lin Xu felt that his doubts were getting more and more today.

But it's normal, after all, Lin Xu has been asleep for 10,000 years, even if he has tried his best to understand what happened later after he woke up, it is impossible to fully understand everything.

There are a lot of things that you don't know, and that's normal.

"The human civilization cemetery project is a tomb built by human beings on the earth for themselves before setting sail, where the image data of human civilization are permanently stored, as well as some creations that have affected the process of human civilization at various key nodes of human civilization, including three stones."

"Did you fix your own tomb before you set off? What a determination they have. Lin Xu said with emotion.

After thinking about it, Lin Xu asked again.

"Is the cemetery on Earth?"

"Yes, at the top of Mount Everest." Taiyin replied.

Lin Xu nodded, he had already decided to go back and get the three stones to see what they were.

As for saying that it is not good to take the funeral goods.

I am also a human being, and there is nothing wrong with taking my own burial.

Subsequently, Lin Xu continued to visit the Jupiter Museum.

Although most of the precious collections have been taken away by the voyage group, the remaining collections still make Lin Xu marvel.

In particular, in the process of various human conquests of the solar system, the fragments of the spaceships used were put together again into a complete one, and the entire spaceship was stored in the museum.

It's also a shame that the museum is large enough to occupy a huge space inside Europa, otherwise it really wouldn't fit it.

The spaceship fragments were taken away by humans in a significant way, but most of them remained.

In the end, Lin Xu even ordered to mobilize several space transport ships from the earth, and asked the autonomic machinery to select some of the remaining human beings in the Jupiter Museum who did not bring them to the voyage ship group, and also moved them back to the earth.

It wasn't until a few days later that the earth flew farther and farther away, and Lin Xu stopped moving.

Even so, there are still many collections in the Jupiter Museum, after all, it is a museum that occupies the interior of an entire planet, and the huge collection in it is not so easy to take it all away.

I just hope that in the near future, when the earth returns, this museum will continue to exist.

At this time, Lin Xu, who had already returned to the earth, also got the three items codenamed Stone.

It is said to be a stone, but in fact it has nothing to do with the stone.

It was three perfect diamond-shaped objects the size of a bottle cap, and the inside seemed to be a chaos, just staring at it, as if the whole soul was about to be sucked in.

Lin Xu studied it for several days, but he didn't figure out what it was.

In the end, it had to be put on the shelf for the time being.