Whether there really are other life and other civilizations in the abyss of the universe that human beings have never reached has always been a topic that human beings are constantly exploring and imagining.

For Chen Mengchuan, he suspects that in the almost infinite three-dimensional universe, there are not only life, but even very, very many, and there are even many cosmic civilization orders, but human beings have not yet stepped out of it and have not touched it.

Those alien civilizations in the dream are so powerful, so mysterious.

How many years has such an alien civilization developed in the space of the universe?

It's hard to know.

But there is no doubt that it must have developed longer than the civilization of the earth.

Perhaps the pace of civilization is hundreds of years longer than that of human beings, and it is also thousands of years, or even tens of thousands of years.

No one knows.

How powerful is such a civilization?

There is no way to know.

The only thing humanity can do is to strengthen itself, prepare for the coming war, and leave the fire behind.

Evening on Mars.

In an open R&D test area of the Six Yan Palace, many people were watching a flying machine in the test area on layers of fences.

"How much can this insulation withstand the low temperatures of Europa?" Chen Mengchuan touched the cold insulation material in the middle of the aircraft and asked a scientific researcher beside him.

This scientific researcher, surnamed Qian, is called Qian Jianghai, who used to belong to the Xia Academy of Sciences, and later started a material business on his own, and the business used to be very large, and he established offices overseas. Later, the company went bankrupt, and interviewed Tianzhi Technology as a scientific researcher, joined Tianzhi Technology for more than 1 year, and soon emerged and played an important role in the material research and development department of Tianzhi Technology.

"Mr. Chen, this kind of cold insulation technology is not only because of the material, but also because of the structure. The inner part of the 9-layer cold insulation layer is based on nuclear energy heating, which is equivalent to the external temperature is not easy to erode to the inside, and at the same time, it is continuously heated inside, during which a lot of heat energy will be lost, but on the whole, if it works in the space environment of minus 200 degrees Celsius, the problem is not big, and if it is more extreme, we have tested to a low temperature of minus 250 degrees Celsius, and it can still hold on and work normally. ”

"In that case, exploring Europa should be fine?" Chen Mengchuan smiled.

"In a short period of time, the problem should not be big, but the specific situation still needs to be subject to the actual situation." Qian Jianghai said it more conservatively.

"Go see the multi-armed crab."

"Okay."

Several people walked around the aircraft and saw a bloated multi-armed crab in the hatch area on the other side of the aircraft.

The overall exterior structure has not changed much, but the interior has undergone a great modification.

27 heating devices and 3 high-intensity energy conversion devices make the belly of the polygobby crab bigger. Each limb is also equipped with a cold barrier, and the whole looks like a large crab covered with fluff. There are some cute art styles.

"On the limbs of these multi-armed crabs, in order not to affect the movement, we will have less cold insulation layer on it, but based on a large number of graphene thermal filaments, the degree of flexibility is not bad, and the thermal conductivity of graphene is unparalleled. We have tested the cold holding capacity of these multi-armed crabs, and it is very good. Basically, it can work stably in an extremely cold environment. ”

Chen Mengchuan walked over and patted the joints and limbs of the multi-armed crab, which were very thick, and the outermost layer felt a little velvety to touch.

According to NASA's extensive data, Europa's surface temperature is very low, with the average temperature in the equatorial region ranging from minus 150 degrees Celsius to minus 170 degrees Celsius, and the north and south poles are even cooler, reaching a terrifying minus 220 degrees Celsius.

Because of this low temperature, the entire surface of Europa Europa is covered with permanently frozen water, known as perpetual ice.

But underneath this perpetual ice, Europa is pulled by Jupiter's gravitational pull, and the heat energy provided by this tidal force may keep the water below the thick ice on the surface liquid at one time!

This conjecture was initially triggered by a series of speculations about tidal heat, the slightly more central orbit and the orbital resonance between Europa and other Galilean moons.

NASA had invested a large number of map reading teams in the Galileo program, and after analyzing a large number of images taken by NASA's Galileo and another exploration spacecraft, Voyager, they deduced that Europa's topographic features meant the existence of an underglacial ocean! This probability is very high, and even the lack of a flying machine to fly to Europa Europa to confirm the coffin.

Now Tianzhi Technology is going to drop this spaceship to Europa to confirm this final step.

However, there is no doubt that the surface terrain of Europa is very complex, and the difficulty of scientific research under this complex terrain is also very large, and the test for multi-armed crabs is also very great.

A small group of scholars in Europe who have studied geology and the space environment deeply explain Europa's chaotic topography with its characteristic surface to the seeping of the underlying seawater out of the surface.

However, this interpretation is relatively controversial and has been debated endlessly.

More geologists who have studied Europa are more inclined to support a theory known as the "thick ice" model.

Because they think that even if such an ocean exists under Europa's ice, it is almost impossible to have a direct impact on the surface, because the ice is undoubtedly very, very thick.

But if you really care about how thick the ice is in Europa, it's already a matter of going on a field trip to know the final result. Because of this, there is considerable disagreement among different research teams on the estimation of the thickness of the Europa ice crust, with some believing it to be several thousand meters or tens of thousands of meters.

The Europa spacecraft has a large section, and this large area is equipped with a nuclear drilling rig, and in the plan, the mission of this nuclear drilling machine is to drill as deep into the center of Europa as possible, one of the purposes is to find out how thick this ice crust of Europa is!

For the "thick ice" model, everyone at Tianzhi Technology is still relatively sure, because there are several huge impact craters on the surface of Europa! These massive impact craters are the best evidence in favor of the "thick ice" model.

The largest impact crater on the surface of Europa appears to be surrounded by concentric circles, and the crater appears to be fairly flat with fresh ice.

Based on this phenomenon and combined with the estimation of the thermal energy generated by tidal forces, the ice shell thickness is relatively similar, and they all believe that it is between 10 and 30 kilometers, which is about the same thickness as the earth's crust, which means that the ocean under the ice may be as deep as 100 kilometers!

If Europa's subglacial ocean were truly alive, it would be a huge ecosystem!