Half-immortal civilization

Compared with the earth, Ceres is so small that the gravitational acceleration on the surface of Ceres is only 0.27, compared with 9.8 on the earth, the difference cannot be measured in miles.

The escape velocity of Ceres is only 510 meters (1836 kilometers per hour), which is really not enough compared to the Earth's escape velocity of 11.2-11.3 kilometers.On Ceres, however, when the speed reaches about 350 meters per second (1260 kilometers per hour), it can initially get rid of the planet's gravity and upgrade to a satellite.

Liu Haibo rested, and the rest was the responsibility of the various team leaders.The ranks of the team leaders are also different; in order to prevent confusion in the command, without Liu Haibo present, the captains of the ten teams dispatched themselves: from the first to the tenth, the command authority decreased in turn.The captain of the first team can be said to be the vice-captain of the expedition team.

But now, Comrade Su Jiuyang, the leader of the second squad, is in charge of commanding, and the person in charge of driving the spaceship is also a member of the second squad.

"Keep the spacecraft stable and release nano-satellite exploration. Don't let go of any corner of Ceres. Once you find a case or other situation, please report it in time."

Nano-satellites are released one by one, maintaining a speed of 400 meters per second. At this speed, they can circle Ceres in about two hours and twelve minutes.Among these satellites, some are responsible for exploring the structure of elements, some are responsible for exploring temperature, some are responsible for seeing through geographical structures, and some are responsible for detecting radiation conditions, magnetic fields, illumination, and so on.Hundreds of nano-satellites, large and small, were released.Moreover, these satellites are not disposable and can be recovered later.

Sections of data are constantly being transmitted back, and all kinds of information need to be sorted; the second team is busy without touching the ground.More importantly, it has been nearly two days for everyone, and they still cannot adapt to the current state of life: everything seems to be delayed.Of course, after so long (starting from crossing the orbit of Mars), everyone has gradually gotten used to this kind of life; of course, it is slowly returning to normal now.Just like coming to a strange environment, it always takes a little time to get used to it.

In fact, after this period of exploration, everyone has also discovered that humans will still be affected beyond the orbit of Mars; the habitable zone in the universe is not as simple as it appears on the surface (liquid water), there are other The reason; but the adaptability of human beings is also extremely strong: up to now, it is slowly recovering, and physiological and other problems have not been damaged.This shows that human beings are fully qualified to carry out real space immigration.Of course, the premise is that scientific power can keep up.

But now, using 24 hours to detect Ceres, on the other hand, it is also trying to let everyone adapt to the current environment.Slow action and slow thinking are extremely dangerous in space exploration.You can't wait until the danger is in front of you to find out.

But in theory, detecting a naked star (no atmosphere) like Ceres, and a dead star (no crustal movement), should be said to be not particularly dangerous.It can only be said that it is a bit dangerous, after all, this is an unknown world.

"It's so beautiful!" A team member observed Ceres through a telescope.

Although it is a little far away from the sun, a full three distances from the earth, the brightness of the visible light on the front is already sufficient.Even under the sunlight, water vapor will occasionally emerge from some cracks.

Of course, the detection on the earth shows that the water vapor should belong to the kind of comet, which is formed by the sublimation of ice directly without going through the liquid process.However, close observation overturned this conclusion, because the water vapor obviously exists in the state of fog beads; although the time and distance are very short, it quickly turned into bright ice crystals; but at the equator, there are still many places Moisture will appear, but after a centimeter or two off the ground, it will turn into ice crystals.

Under the observation of high-powered telescopes, these subtle changes are obvious at a glance, especially now that the spacecraft is only 300 kilometers away from Ceres.

At first glance, Ceres in the sun is really beautiful: there are flat ice surfaces, which are as bright as a mirror; there are red channels, which are clay; and brown spots, which are mountains.

Only in space can one understand that a world with water is a beautiful world, even if it is a frozen world.Water, for human beings, is the source of life, and even a glimpse from a distance can make people's hearts flutter—this feeling is especially obvious in the lonely space.

"I bet there is definitely liquid water on Ceres. And if there is liquid water, it will be possible to have simple life!" This is an extremely young team member, a rising star in the master company.

Looking at the young man who still has a little fluff on his mouth, a boy who is only 20 years old, Su Jiuyang replied with encouraging words: "Xiao Lin (Lin Fengyun), don't worry; you will have a chance to land on Ceres tomorrow, and we will solve it personally." Its veil. Well, it’s like lifting the bridal veil, and you can be the first to land if you want. Of course, it’s a little dangerous.”

"I'll go! It's just me!" Lin Fengyun agreed without hesitation.Not to mention anything else, being the first to land on Ceres is a moment in history!As a young man, how could he possibly withstand such a temptation. "If it is a bride, I will take this bride home!"

"Haha...Xiao Linzi, the average radius of this bride is about 470 kilometers, is your stuff long enough! Hahaha..."

For a moment, a little yellow digestion resounded through the entire spaceship control room.

"Hmph! Many female employees can prove that I have enough things! I just heard that some people are always laughed at by female employees!" Although Lin Fengyun has just grown up, his wisdom is precocious these days, and his teeth are sharp.

In an instant, there was another burst of laughter.Seeing that they were about to land on Ceres, everyone felt a lot easier.A key task is completed, which means that the way home is one step closer.

24 hours later, after preliminary exploration, it was proved that Ceres had a completely solid core, but the stratum was too thick, and the power of the nano-satellite was not enough. Even a specially designed gamma-ray detection satellite could only penetrate about 30 kilometers through the ice layer; When it comes to rocky ground, the effective detection distance is only 3 kilometers; and when it comes to liquid water, the detection distance is only a few hundred meters-it has not been detected yet.

And these data are far from enough to detect an icy planet that is said to have been frozen for at least 40 billion years.Therefore, this detection is a destructive detection plan - of course, this is the last choice.

At this time, Liu Haibo had already rested and was monitoring all the expedition activities again.Of course, at this time another team is already in charge of manipulating the spacecraft.

"Did you find anything special?"

"Yes!" Yang Zhencheng, the captain of the fifth team, replied: "In this area, the area A we just divided, the ice is extremely flat, and there may be liquid water under the satellite detection."

"Have you found any danger?"

"Not yet." Yang Zhencheng replied very affirmatively.

"Okay, I'll let everyone know that the rest of the teams are ready to land." Liu Haibo finally announced the decision that made everyone excited.

"Captain, I found area A, and I'm applying for the first landing!" At this time, Lin Fengyun climbed into the main control room with all hands and feet.