Tang Yue pulled the car and dragged the solar panels through the battery farm.

Mars is extremely dry. It is difficult to find a place on Earth that can compare with this place. The Ixi Plain where Tang Yue is located has not rained once in the past tens of millions of years. Going back to the same time, the Earth

At that time, the Sahara Desert was still a tropical rainforest with abundant rainfall.

Most of the water on Mars is frozen at the poles by low temperatures. In those low-lying canyons where sunlight is difficult to reach, the frozen soil containing water will not be civilized for hundreds of millions of years. This is a very huge water resource, with a total amount of more than 10,000,000.

billion tons. If humans want to colonize Mars in the future, this will be an important source of fresh water.

Speaking of which, there are a lot of resources on Mars, including water and methane, but it’s a pity that human hands are too short to reach them.

Tang Yue opened the bracket, propped up the battery panel, grabbed a handful of soil, crushed it gently and scattered it under his feet.

Logically speaking, the soil contains a trace amount of water. Lao Mao said that as long as you set up a large enough pot, dig deep into the soil and heat it, you can get water vapor... The reason why this seemingly infinite method of preparing fresh water is

It was not actually implemented because Tang Yue couldn't find such a big pot and couldn't collect such thin water vapor.

"Whether it is rainfall or typhoons on the earth, including ocean currents and atmospheric circulation, they are fundamentally the flow and exchange of heat." Lao Mao said, "The warm currents in the ocean rise, the cold currents sink, and the water vapor carries the heat in.

The atmosphere is released through low-pressure cyclones. The engine behind the complex water circulation on the earth is thermal energy, but Mars is dead. It has no shortage of water and lacks the engine to drive all this."

"Is there any way to make this engine run again?" Tang Yue asked casually.

"The engine of Mars is itself, but this engine has stopped running for more than three billion years." The old cat replied, "You want Mars to start running again? Human beings can't do it. This is also a God's project."

"I think of the magnetic stirrer I used in chemistry classes in college. Have you ever seen that kind of thing, old cat?" Tang Yue said, "A spindle-shaped metal lump, throw it into the solution, and just apply a

If we apply an external magnetic field to Mars, then the stirrer will rotate rapidly. In the same way, if we apply a strong enough external magnetic field to Mars, can we drive the core of Mars again?"

"Once the geological activity of Mars restarts, the gases in the mantle and poles will be released, and the atmospheric concentration will gradually increase." Tang Yue continued, "The environment of Mars will be improved."

"The core of Mars is a big iron lump with a radius of 1,800 kilometers." Old Cat said, "It weighs at least 1.9×10∧20 tons. It weighs 190 trillion tons. What kind of magnetic field do you use?

drive?"

"With this ability, you can colonize the Milky Way, so why are you still obsessed with Mars?" The old cat finally said, "Don't be wishful thinking. Even if there are thousands of possibilities to bring Mars back to life, it is impossible to do it now.

"

Tang Yue held a long-handled shovel in his hand and wrote stroke by stroke on the sand at his feet.

"Tang Yue is here for a visit."

"Human civilization is here for a visit."

"Earthly creatures come here for a visit."

"Later intelligent creatures, if you see these words, remember that someone has been here before you."

The sharp shovel tip cut through the sand and dragged out a deep ravine, but the free sand grains immediately flowed in again, filling the sunken ground.

The words Tang Yue wrote soon became blurry.

Tang Yue threw the shovel on the ground and sat down to rest. In just two minutes, the two characters "Tang Yue" could no longer be distinguished. This was the erosion of traces of civilization by natural forces. The blurred writing in quicksand was nothing more than a small

The epitome of Tang Yue dug a ten centimeter deep ravine, and it took nature ten minutes to smooth it out. Tang Yue dug a ten meter deep pit, and it took nature a hundred thousand years to smooth it out.

Tang Yue wanted to leave something behind, but the more he thought about it, the more difficult he became aware of it.

Time is a bulldozer, it slowly and unstoppably bulldozes everything.

The best carrier to record civilization is, after all, civilization itself.

"Where has that comet gone? How far is it from us?" Tang Yue raised his head and looked up at the sky.

"Forty days."

The old cat replied that it was working as fast as possible.

"What about the comet's orbit?"

"Still counting... What the hell, it's so dead again. Is HP's computer of this quality? I shouldn't have set so many variables, Miss Maidong? Miss Maidong, do me a favor!"

Tang Yue listened to the quarrel between Lao Mao and Mai Dong on the channel. The re-entry of the Orion 2 spacecraft into the atmosphere was much more risky than the original launch of the Eagle spacecraft. Lao Mao himself said that if he hadn't been forced into a hurry, he would have

I will definitely not let Maidong board this sinking ship.

Dogs can jump over walls when they are anxious.

Cats will curse when they are anxious.

Tang Yue packed up the battery panels and returned to Kunlun Station.

"*! HP, your broken computer! I *your whole family*!" The old cat was blowing up his fur, "I wish your whole family ** to go to heaven! Explode on the spot!"

Tang Yue hung the Mingguang Armor on the wall to charge, took off his clothes and put on a robe, and poured a glass of water to drink. Old Mao took out a stick from under the table and threw it over, "Go on!"

"What's this?"

Tang Yue caught the long stick like a cane. It was quite heavy. He looked up and down. It was about sixty centimeters long. It was very hard and had a metallic texture. It might be made of some kind of metal bracket, and it was wrapped with a

There are layers of white draft paper, obviously the waste draft paper is used. There is a circle of paper tube stuck to the bottom of the pole and wrapped in layers of transparent tape.

"A scale model of the Orion 2 spacecraft." Old Cat answered.

"Orion... No. 2?" Tang Yue grinned. He didn't find any similarity between this thing and the Orion spacecraft. Except that it was also slender, it was more like a hammer than a spaceship. It could hit people when turned upside down.

The kind of skull.

"This is the main truss." Old Cat pointed to the thin pole.

"This is the engine." Old Mao pointed to the paper tube at the bottom. The paper tube was tightly sealed with tape. Tang Yue didn't know what was inside, but it was very heavy.

Tang Yue nodded slowly, and he noticed it when Lao Mao reminded him.

It is indeed a model of Orion. Although it is very abstract and impressionistic, I cannot praise Lao Mao's craftsmanship.

"It doesn't look like it in appearance. After all, the conditions are limited." Old Mao said, "But in terms of weight ratio, I'm as close as possible. If you don't agree, you can make a better one yourself."

"Serve! Brother Cat takes action, it's extraordinary!"

Tang Yue did not hesitate to give his thumb.

With the scaled model, the old cat finally no longer needed to use his pen to demonstrate. Tang Yue stood up Orion 2 in the palm of his hand, and the model stood firmly.

Tang Yue stretched out his index finger and pushed it gently.

“Very stable.”

"Most of its mass is concentrated at the bottom, which is why we must dismantle the Orion and Eagle spacecraft, and we must lower the center of gravity as much as possible." Lao Mao said, "The lower the center of gravity, the more stable and safer it will be.

"

Old Mao took the model off Tang Yue's palm and stood it on the table.

"I'm solving the problem of attitude stability. It must land vertically, with no more than five degrees of left-right deviation margin. If by mistake, this happens..." The old cat flicked on the pole, and the Orion model "clanged"
Chapter completed!