The expedition team came to their report after the failure of quantum ultra-distance transmission deterrence, this time they lost five people in the operation, all of them disappeared into the snow-white walls of the ruins out of thin air after not knowing what was triggered, the depth of exploration was close to 10,000 meters, they installed a large number of sonar and infrared detection devices, and in the process of exploring the ruins, they discovered an incredible fact.

The Moon, in itself, is a spaceship.

Although it sounds incredible, but this is indeed true, they gradually went deeper into the ruins, found that there are many intricate branches in the ruins, as the depth increases, these branches become more and more obvious, they scout along the road of the branches, and found that these branches are very long, completely unknown where they will lead, after entering the underground under 10,000 meters, the oxygen transmission distance of the expedition team has reached the limit, but the ruins still have not reached the end, sonar detection knows, this is still very wide, It's like there's no end......

After combining a variety of evidence, the exploration team finally came to the conclusion that this ruin is the moon itself, and the interior of the moon is such a super spaceship as huge as a planet, and the reason why Mark and they can enter through that hole is because some of the spacecraft's facilities are relatively close to the surface, such as the starport and the item transfer port, but most of them are buried deep inside the moon.

And the giant underground ditch that Mark saw before was also explained, because the moon itself is not a naturally formed planet......

There are many different theories about the formation of the moon, and the date of migration to the moon has not been proven, and scholars are still arguing about the origin of the moon, the most well-known and convincing of which is the impact theory.

Scholars believe that the moon was born in a big impact, when the earth was still in the neonatal stage of the planet, there was no solid surface and mantle, it belonged to a very fragile liquid planet, at this time a huge asteroid hit the earth, its volume is expected to be one-third of the size of the earth, the strong impact caused a large amount of earth material to drift away, and then they were captured by the earth's gravity, during that time, the earth had a brief ring, but the earth is not a planet that can support the ringOver the course of hundreds of years, these rings of matter quickly coalesced and finally merged into a separate star, the Moon...... The asteroid that hit the Earth was also named, Theia.

But now that everything has come to fruition, Theia is not an asteroid, but a spaceship, a spaceship left behind by a lost civilization that is incredibly advanced.

Today, everything that happened at the beginning can no longer be clearly restored, whether it was the spaceship that hit the earth, or it was just docked around the earth, gravity caused the liquid surface of the earth to cover it with a shell, these are impossible to know, the only thing we know is that this time, human beings have found treasure again, this can be regarded as the second geographical discovery, the Iberian Peninsula is only 2,400 kilometers from the American continent, the indigenous people rowed wooden boats lucky enough to reach the distance, Mankind has not discovered the existence of the Americas for thousands of years, and this mysterious lost spaceship ......

It has hung above the Earth since three billion years ago, until the Earth has cooled from a hot fireball, until the flowers of life bloom in a dead silence, until our ancestors learned to look up at it, until humans landed on the moon, until generations were born here...... Growing up, people did not discover the secret that had been hidden for countless years.

If it weren't for the crisis that the earth had encountered this time, if it hadn't been for Mark who had stumbled upon all this, if it hadn't been for the ...... If it weren't for Sun Tan's grandfather who left that hint full of reverie, I'm afraid that in a few hundred years, human beings would not have discovered that there is such a history hidden under this land.

Sun Tan also learned the shocking truth after a while, and another direction to save the earth also quietly appeared, if using long-range quantum transmission to intimidate hijackers was an easy and convenient path, then activate the lunar spacecraft...... is a completely unknown and dangerous thorny path.

It's a huge legacy, so expensive that humans would feel uneasy about having it, we don't know why it was left in orbit in the first place, we just know that now we have it, whether we can use it or not, no matter how long it takes, we can understand the civilization that created it, and in short, we have it, and we have received unimaginable precious gifts.

After Sun Tan learned the news, he immediately followed the others in the laboratory to the scene, he was shocked by the technology left behind by the lost civilization when he first came, and this time, he was even more shocked, the excavation team has cleared a large number of rock layers on the surface, revealing the whole view of the starport under the cave, which is just the tip of the iceberg for this spaceship, but it is shocking enough.

The size of this spaceship has exceeded the scope of human imagination, and any part of it is as huge as a plain of the moon sea, and people can't feel any bulges when they walk on it, just as people don't feel that the stars are round, and even the smallest structure on its body is as huge as a mountain peak to humans.

"Oh my God, my worldview is about to collapse, our moon ...... Actually, it's actually a complete spaceship, it's even running, and it still has the ability to continue to travel in space......" Sun Tan stroked the ground under his feet, the strata here had been stripped away, and he stepped on the shell of this miracle spaceship under his feet.

When Sun Tan first came into contact with the lost civilization, he cared about this material, and now that it is completely exposed to the outside world, Sun Tan can feel its uniqueness even more, buried under the soil for billions of years, and has not let it undergo any changes, no deformation, no bending, no rust, and even no defacement like brand new, this material seems to exist forever, silently mocking the ignorant and short-sighted technology of human beings.