In a short time, the buffered aerogel foam decomposed into real foam, one by one vaporized and disappeared, and finally the round lander was exposed.

This 123-ton lander consumes 15 tons of fuel and buffer foam, and now there is 1 ton left.
The supporting equipment of the middle lander accounts for 52 tons; Scientific equipment accounts for 36 tons; The remaining 2 tons are reserve fuel.
The spherical design is convenient for dealing with the ice rift and special terrain, and also for enhancing the overall strength of the lander.
This is to learn a lesson from a lander and readjust the new design.
The mechanical foot of the spherical lander is adjusted to a landing posture, and then the front side is exposed, and the top of the detection equipment of the protected part is extended, just like a mechanical spider.
To adapt to Europa’s surface environment, mechanical feet should be adopted instead of wheels or tracks.
On whether it is wheeled or tracked, the flexibility is not as good as that of mechanical foot plus Europa. The gravity is very low, and the mechanical foot movement system does not affect the speed too much.
On the contrary, if the mechanical spider encounters an ice rift or a sudden earthquake or ice collapse, it can shrink into a ball with the strongest defense to resist these situations.
Even mechanical spiders trapped in cracks and rifts can escape from most dangers through flexible mechanical feet.
The spider lander moved around with a leg after showing its mechanical foot.
At the same time
After 17 minutes of signal transfer, Su Xiaoyu, who is located at the Mars outpost, finally received the message that the lander had landed successfully, and he was only a little relieved.
Then he quickly adjusted his mood and got busy again.
Spider lander data is constantly being fed back. Although the one-way communication delay is about 17 minutes, Su Xiaoyu is much faster than Bluestar headquarters.
If Bluestar headquarters wants to regulate the one-way communication of Spider Lander, the communication delay is 24 minutes less, and the round-trip communication delay is about 4 minutes.
After getting the first batch of data, Su Xiaoyu looked at some key data and found that there was no significant difference between them and the researchers’ estimated values.
In fact, for Europa’s surface, after so many times of detection data search, the Ministry of Space has mastered extraordinary information and analyzed many valuable things from it
For example, a lander that only stayed on Europa’s surface for six minutes brought a lot of data to researchers.
Spider lander is based on these data for secondary development.
Three hours later, Su Xiaoyu ate dinner and reached further instructions to let the spider lander try to move northeast while contacting Bluestar headquarters.
Europa’s back revolves around Jupiter at a very fast speed. The period of revolution is about three and a half days, which is about four hours a day.
Therefore, the back of Europa is exposed to sunlight for about 42 hours.
At this time, it is in the sunshine period, but for the spider lander, the advantage of being in the sunshine period is not solar energy, but just in the shortest communication distance with the Mars outpost
If you are in the dark, you must add one or two relay communications to ensure smooth communication.
The intensity of sunlight in Europa’s sunshine period is very weak, and it is estimated that it will not work if the spider lander is driven by solar energy.
Spider lander adopts two miniature nuclear decay pools, which is enough for Europa to wait for work in the next day.
If there is no accident, the designer can work here for about 12 years continuously.
Of course, in this harsh environment and strange planet, the life of these landers is usually less than the design life.
It’s good that the previous lander only worked for 6 minutes and directly fell into disability. Although it can emit weak signals, it took 55 days for the disabled to get the box lunch.
Su Xiaoyu can wish the Spider Lander not to get the box lunch so quickly and send more data.
Solar radiation from hundreds of millions of kilometers away makes Europa’s back look a little insignificant.
However, it is undeniable that these sunlight are still tirelessly changing Europa’s sunlight and the water in the ice layer to generate a photodissociation reaction to decompose water into hydrogen and oxygen.
Hydrogen escapes too much, while oxygen is reluctant to wrap around Europa. After years of photolysis, Europa’s surface is covered with an oxygen-enriched atmosphere 2.
Aurora can be seen everywhere during the sunshine period here.
It’s the sunlight colliding with oxygen and water, and this cold light reflects that the spider lander is crawling slowly to the northeast.
You can see a little snowflake falling slowly in the thin gas during the progress.
This is because the sunlight irradiates the ice surface, and then the water evaporates into steam, and then it meets the cold air and directly condenses into snowflakes.
This snowflake is delicate and short, like Europa’s life pulse is weak with a hint of stubbornness.
Suddenly, the spider lander detection equipment fed back some information to the car intelligent system, and there was a covered ice and snow crack ahead.
Although the crack width is 3~7 cm and the surface is covered with ice and snow with a thickness of about 12 meters
However, the spider lander still chooses to detour because the ice and snow layers on the surface of Europa in low gravity may be very fluffy.
Chapter seven hundred and seventy-six Accidents and accidents
Spider lander detoured for more than ten kilometers to the other side of the ice sheet.
According to the intelligent system, the industrial spider lander is going to a hot fountain 73 kilometers away.
Hot fountain is a special phenomenon derived from Europa’s geological activity, which is caused by the interaction between Europa’s geological activity and surface ice.
The ice layer with a thickness of about 1 km has exerted great pressure on the earth and the ocean.
You can refer to the deepest trench surface of a blue star where the seawater pressure is so strong.
The deepest part of the Blue Star Trench is only in the early 10,000 meters, while the ice thickness of Europa is about 1 km, which is about ten times that of Blue Star.
If Europa’s surface is a flowing liquid ocean instead of an existing ice layer, the universal hot fountain will not
However, Europa’s surface is hard ice with a thickness of 1 km. Ice is a solid substance, and its fractures and cave areas, such as fierce geological activities, will lead to cracks in the ice layer.
It’s like a glass fish tank filled with water. Once the glass cracks, the water will definitely seep out along the cracks.
Europa is such a situation. The liquid ocean in the ice layer is under great pressure, and geological activities cause a lot of cracks in the ice layer. High-pressure water will naturally erupt from the ground.
Of course, due to frequent geological activities, the location and time of these hot fountains are uncertain.
Maybe today, the sky here is covered by faults, and the faults produce new cracks and bring out new hot fountains.
The spider lander went to the nearest hot fountain because the geological activity on the back of Europa was less and weaker than that on the front.
However, this road has gone very slowly.
The straight-line distance is about 73 kilometers, but the dense ice rift and hidden cracks, large and small, all test the intelligent system of Spider Lander.
Although Europa’s surface details have been searched by orbital orbiter in the early stage,
But the fatal thing is that Europa’s highly active geological activities cause the surface ice to change all the time.