Ceres is so small compared to the Earth 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, when the speed reaches about 350 meters per second (1260 kilometers per hour), it can initially escape the planet's gravity and upgrade to a satellite.
Liu Haibo rested, and the remaining team leaders were responsible. The positions of squad leaders are also different; in order to prevent confusion in command, without Liu Haibo present, the captains of the ten squads make their own arrangements: from number one to number ten, the command power decreases in sequence. The captain of the first team can be said to be the deputy captain of the expedition team.
But now, the person in charge is Comrade Su Jiuyang, the captain of the second team, and the person in charge of driving the spacecraft is also a member of the second team.
"Keep the spacecraft stable and release nanosatellite exploration. Do not miss any corner of Ceres. Please report it in time if you find any cases."
Nanosatellites are released one by one, maintaining a speed of 400 meters per second. At this speed, it 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, some are responsible for detecting radiation conditions, magnetic fields, illumination, etc. Hundreds of nanosatellites, large and small, were released. Moreover, these satellites are not disposable and can be recycled later.
Pieces of data are constantly being transmitted back, and all kinds of information need to be sorted and sorted; the second team is too busy to keep their feet on the ground. What's more important is that everyone has been through this for nearly two days now and still cannot adapt to the current state of life: everything seems to have been delayed. Of course, after such a long time (since crossing the orbit of Mars), everyone has gradually become accustomed to this kind of life; of course, it is now slowly returning to normal. Just like coming to a strange environment, it always takes some time to adapt.
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 seems on the surface (liquid water), there are other The reason; but human beings are also extremely adaptable: so far, they are recovering slowly, and physiological and other problems have not been damaged. This shows that humans are fully qualified to carry out real space immigration. Of course, the premise is that scientific power can keep up.
Now, using 24 hours to detect Ceres, on the other hand, we also try our best to let everyone adapt to the current environment. Slow movement and slow thinking are extremely dangerous in space exploration. You can't wait until danger is right in front of you to discover it.
However, theoretically speaking, the risk of detecting a naked star like Ceres (no atmosphere) and a dead star (no crustal movement) should not be particularly great. 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 the telescope.
Although it is a bit far away from the sun, three times as far as the Earth, the visible light from the front is bright enough. Even under sunlight, water vapor will occasionally emerge from some cracks.
Of course, detection on Earth shows that the water vapor should belong to comets, which are formed by the direct sublimation of ice by heat without going through the liquid process. However, close observation has overturned this conclusion, because the water vapor obviously exists in the state of mist beads; although the time and distance are very short, it quickly turns into bright ice crystals; but there are still many locations at the equator Water vapor will appear, but after a centimeter or two above the ground, it will turn into ice crystals.
Under the observation of high-powered telescopes, these subtle changes are clearly visible, especially now that the spacecraft is only 300 kilometers away from Ceres.
Ceres under the sun, at first glance, is really beautiful: there is a flat ice surface, as bright as a mirror; there are red ditches, which are clay; and brown spots, which are mountains.
Only in space can you 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. Even taking a look at it from a distance will make people's hearts beat. This feeling is especially obvious in the loneliness of space.
"I bet that 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 this boy who still had some hair on his mouth, a boy who was only 20 years old, Su Jiuyang replied with words of encouragement: "Xiao Lin (Lin Fengyun), don't worry; when you have the opportunity to land on Ceres tomorrow, we will untie it ourselves." It's the veil. Well, it's like unveiling the bride, and you can be the first to land, of course."
"I'll go! It's just me!" Lin Fengyun agreed without hesitation. If nothing else, being the first to land on Ceres is a moment in history! As a young man, how could he withstand such 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 thing long enough? Hahaha..."
For a moment, a little yellow digestion resounded through the entire spacecraft control room.
"Hmph! Whether my things are enough or not, many female employees can prove it! I heard that some people are always laughed at by female employees!" Although Lin Fengyun has just grown up, his wisdom these days is precocious and he has a sharp tongue.
In an instant, there was another burst of laughter. Seeing that they were about to land on Ceres, everyone felt a lot more relaxed. 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 has a completely solid core, but the formation is too thick and the nanosatellite power is not enough. Even the specially designed gamma ray detection satellite has a penetration of only about 30 kilometers of ice; and When it comes to rocky ground, the effective detection range is only 3 kilometers; when it comes to liquid water, the detection range is only a pitiful few hundred meters - it has not yet been detected.
And these data are far from enough to detect a cold planet that is said to have been frozen for at least 4 billion years. Therefore, this detection has a destructive detection plan - of course, this is the last choice.
By this time, Liu Haibo had finished resting and was monitoring all adventure activities again. Of course, at this time, another team was already in charge of controlling the spacecraft.
"Did you find anything special?"
"Yes!" Yang Zhencheng, leader of the fifth team, replied: "In this area, the area a we just divided, the ice layer is extremely smooth, and satellite detection may contain liquid water below."
"Have you found any danger?"
"Not yet." Yang Zhencheng answered with certainty.
"Okay, let me inform everyone that the teams that have finished their rest are ready to land." Liu Haibo finally announced this decision that excited everyone. "Captain, captain, I discovered area a. I apply to be the first to log in!" At this time, Lin Fengyun climbed into the main control room using both hands and feet.