So, should we eat it up before hibernation, or should we wake up after hibernation and have a good time?

How to achieve the highest satisfaction and reduce the risk of deterioration is a difficult mathematical problem.

Idle and boring, Zhang Yuan has been constructing "satisfaction function" and "deterioration risk function" in his mind, trying to get a higher degree of satisfaction at the cost of two kilograms of beef jerky.

Half a quarter of an hour later, "boom" a light sound, the elevator they took has reached the surface, the instrument shows the outside temperature of minus 170 degrees Celsius.

"Mr. Zhang, I can only send you here."

"Maybe we'll never see each other again. Can we A hug? " The little girl in charge of receiving Zhang Yuan hesitated for a while and whispered in his ear. It's a pity that nothing happened these days.

Zhang Yuan was stunned. He opened his hands and hugged the girl who had just known for five days.

Bearing the pain of the meat, he still gave her some of the beef jerky in his hand.

"Thank you for your care these days. I'll give you this little gift."

The girl jumped up happily: "ah, you are such a good man! I haven't eaten the earth's beef jerky for a long time Alas, everything here is very expensive... "

From her surprise eyes, we can know that this thing on Europa is absolutely a resounding "luxury".

No wonder the organizers will treat them as small gifts.

Although Europa has begun to breed some livestock, in order to maintain the health of the ecosystem, the production is bound to be low.

"Just a little beef jerky. It's nothing

Zhang Yuan was dismayed that these astronauts might have to face such a bleak tomorrow.

Maybe It's even worse.

"Bon Voyage!"

Slightly nodded, Zhang Yuan turned to take the train to leave, far away, you can see the girl waving her hands in the window.

The space elevator is hundreds of kilometers away.

"Goodbye!"

Along the way, we can see all kinds of hot and busy construction site scenes.

The flame of nuclear fusion has been ignited on this planet, and the next development is only a matter of time.

With the efforts of generations, it will become another home for mankind.

Maybe

Europa has many defects compared with the earth. The earth's surface is full of ice, and there is no shortage of water resources, but the planet is extremely short of metal elements, rare earth and organic matter.

At present, mineral mining companies can only develop some large meteorite deposits that fall on the surface. However, the reserves of these meteorites are all quite limited, and there will be no more after mining.

Jupiter also has another relatively large moon, IO, which makes mining more difficult.

The size of IO is similar to that of Europa. It is an earth like planet, but many super volcanoes and super earthquakes occur frequently, making it an extremely dangerous planet.

No one will invest in an unstable place. Maybe in a few years, a super strong earthquake will make all the investment go astray.

From this point of view, there is still considerable room to improve the level of human interstellar development.

If there is enough capacity to quell volcanoes and earthquakes, there are still many places in the solar system to live

"Elder martial brother Zhao, I noticed that because of improper maintenance, some people's bodies degenerate seriously, and their muscle lines are different from those of normal people." When taking the space elevator to return to the earth times, Zhang Yuan asked quietly.

"This kind of great physical change may cause some irreparable damage. Even if we finally return to the earth, it will be difficult to recover, right?"

This question has been lingering in my heart. I don't have time to ask it. When I ask it, I feel relieved.

Under the condition of low gravity, the pressure on the intervertebral disc caused by the weight between the vertebral bodies disappears, the compression of the intervertebral disc is released, and people will become higher.

Normally, as long as the damage is not serious, the astronaut's height will return to normal after returning to earth.

However, low gravity environment will have a series of effects on gene expression. For some seriously degraded people, they may no longer be able to adapt to the earth's environment.

"Did you also find out..." Zhao Qingfeng thought for a while and said in a low voice, "do you think they will be Xia people?"

"I don't think so. I don't understand what they're saying

"Could it be American, or LAN?"

Zhang Yuan shook his head, "it should not be."

"Who do you think they will be and where do they come from..."

It could be Some small countries?

After thinking for a while, I suddenly realized.

Behind all the brilliance, there are countless unknown nights.The salary of the normal technicians here is too high. The annual salary of one million starts. And most people's contract is only three years, and will eventually return to earth.

In fact, the development cycle of three years is a little less than that of several decades. Frequent personnel flow is certainly unfavorable to the whole development project.

In this case, for the whole civilization and some capitalists, there are bound to be some more "money saving" and "economic" ways.

Even though the present automation industry has been quite developed, but in the complex environment, the role of human still can not be easily replaced.

Zhang Yuan asked quietly, "these people have settled here?"

"Yes, from the beginning, decades ago."

"Why would anyone like that?"

Elder martial brother Zhao laughed and sighed: "what you think is good or bad is just relative. Why do people want to live in poor places? Why do people live on the Loess Plateau? Why do some people still live in the countryside, not in the city? "

"Compared with the hard days in the past, what's wrong with settling down here? As long as you sell your labor force, at least you can't have the trouble of starving to death, and you can live a more interesting life than there is a bright future on earth... "

In silence, Zhang Yuan found that he had asked a stupid question. "So, can they reproduce?" he asked

Elder martial brother Zhao looked around for a while, and then said, "it's said that you can."

After a pause, he added, "it's OK with the current medical standard. It's just a little bit of a risk. The chance of pregnancy is not high. "

Dead silence in the air. Zhang Yuan originally wanted to ask, under such drastic environmental changes, generation after generation of evolution, whether it will form reproductive isolation and different races?

But after thinking about it, he swallowed it again.

Physiological screening, at least tens of thousands of years? Let him think about this problem, it's a bit too much.