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Can life be found under the ice of the cold dark Nine planets?
We soon had the answer, and it was not just the possibility of life.
Scientists have found that the possibility of finding life under the ice shells of these planets is very high, and this life may even be extraterrestrial.
But what kind of life form should the environment under the ice be so harsh?
We know that most organisms depend on photosynthesis to survive, but there is no light in these environments, so the possibility of plants and microorganisms doing photosynthesis is very small.
However, although the environment is harsh, it is a fantastic treasure for some creatures.
What kind of creatures can survive in such an environment?
Frozen planets.
In 2005, Kacey T. Meaker discovered that Europa may exist in the ocean, and that it was underground, which led to a new understanding of the life science of outer space.
But much earlier, the theoretical physicist Robert Brown discovered that there could be a sea that could hold 13.7 million Atlantic Oceans, which was considered unreliable at the time.
Brown was based on Europa's gravity and tidal changes, and from these changes he deduced a lot of information about Europa, including the possible existence of a huge ocean.
According to the current data, Europa's radius is 1821.3 kilometers, which is relatively small for satellites, and it can be seen that Europa's size is very small, but its mass is much larger than that of satellites, and it may even be half of the Earth's current size, so it can be seen that Europa's density is quite small.
If this density is converted, it will be very large.
Because Europa is very dense, if we subtract the current volume of Europa from the volume of Europa, we can get a very small density value, and even if this is the case, Europa is very dense.
Based on Europa's density, Europa's mass is about 1.3 times the mass of the moon, and Europa's interior is mostly composed of ice and gravel, so Europa's structure can be said to be very simple.
Europa's quality is one of its main features.
So what can this mass be used for Europa?
We all know that Europa orbits Jupiter, so has Europa undergone some changes in its trajectory?
Or did it collide with other satellites, and if it did, then Europa would definitely lose more than just that small fragments, its fragments would be very large, and then gather to form Europa, in which case, Europa would be more dense.
However, according to calculations, Europa's density is very large, so Europa is most likely only slightly collided with other satellites, but this is not a good explanation, so we are more skeptical about Europa's density and the ocean that exists.
But since Cassini spacecraft has taken high-definition images near Europa, we can clearly see the dark liquid beneath Europa's ice crust, suggesting that Europa does exist in the ocean.
In this way, the Brown hypothesis and the Thompson hypothesis have been confirmed, so what organisms can exist on Europa's pebble bottom underground?
We know that life on Earth can survive in low temperatures, and it is very active, such as whales and seals, which are mammals, they are in extremely cold places, but they are very active, why?
This is because its body temperature is high, so it is able to withstand low temperatures.
There is also a kind of biological energy on the earth that can police the cold environment, that is, cold-blooded animals, but they can be very active in extremely low temperature environments, this degree of activity is similar to that of mammals, but the temperature difference between the body temperature of cold-blooded animals and the environment is very small, which is very good compared to the frozen plants.
Therefore, according to the current level of science, it is still possible for these organisms to survive in the glacial environment, but the temperature of the glacial environment is still relatively high relative to the permanence of the two societies.
Life in the subglacial sea.
There are very different organisms on the earth, some organisms can survive in the deep sea, high-temperature lakes, acid-alkali lakes, and the temperature of these water bodies is very extreme, but there is a kind of organism that can be very active in these water bodies, which is enzymes.
Enzymes can adapt their surroundings to the environment in which they live, but can enzymes survive in glaciers?
Can we infer from fossil evidence that fossil organisms in the oceans can survive in glacial environments?
Judging from the current discoveries, the biological species of fossil organisms are very rich, there are single-celled organisms (archaea), as well as multicellular organisms, from the fossils hatched by these fossil organisms, hatching requires a certain temperature, but these organisms are very adaptable and can survive in various environments, so it can be inferred that these organisms can survive in glacial environments.
There is a creature on Earth that can survive in glacial environments, and that creature is the whale.
Whales can survive in extreme cold places such as the Arctic and Antarctica, but what happens to them when they live in very cold places and are under ice?
This is from the whale's body temperature, the whale is a warm-blooded animal, so its body temperature is high, can keep a certain distance from the environment, so as to adapt to the cold environment, and it also has a thick layer of fat, which is used to maintain body temperature, so that it can swim in the cold ocean, but if the low temperature and pressure are large, then even the whale can not resist, and will eventually freeze to death.
But Europa and Saturn's moons know that the low temperature environment is not only like this, the ocean temperature under the glacier is only minus 40 degrees Celsius, but such a low temperature is not the lowest, the temperature of Europa and Saturn's moons may be lower, Ganymede, Ganymede, Enceladus, etc. all have ice crusts, but their ice crust depth is relatively shallow, and the suitable temperature is relatively high, so that there may be ice lakes on it, and thus may also produce organisms.
So what are the creatures that live in these glacial lakes?
According to the organisms with low water temperature on the earth, fruit eggs have jellyfish, polyids, squid, fish, etc., it can be seen that the organisms in the ice lakes adapt to the cold environment, and when the organisms evolve to a certain extent, they will adapt to their own environment according to their own environment.
The makeup of extraterrestrial creatures.
Some people say that the alien creature may be an alien creature with ten legs on its head and wings, or an alien creature with big eyes and a small body, we don't know what the alien creature looks like, but depending on the environment, it may be a creature that looks like a fish.
There are a lot of fish-like creatures on the earth, and they all evolved from ancient fish, and some people say that if there are ancient fish on the biological evolution tree, then the creatures must have been born in water, but this view is wrong.
Ancient fish is the common ancestor of all organisms in the process of evolution, some organisms evolved when there were many other organisms did not appear, so the ancient fish was not necessarily born from the water, there are a lot of creatures on the earth, each organism is the result of evolution, all because of adaptation to their own environment, only organisms that adapt to the environment can stand out in the future survival.
So broadly speaking, life on Earth and extraterrestrial life is the result of evolution, it may be different from life on Earth in many ways, and it may be the same as life on Earth, in short, the structure and appearance of extraterrestrial life we cannot predict now, so as long as it can be proved that there is life in the solar system, it is a historic progress.
The origin of living things is from inorganic matter to organic matter, and then to the birth of cells, this process has gone through tens of trillions of days, but life was born in this rolling universe, and dozens of trillions of years later, life was slowly born, evolved, survived, and finally evolved into what it is now, but in this evolution process, there are very many organisms that are extinct because of changes in the environment, but there are still some organisms that rely on their own adaptation to survive from the environment.
The environment of outer space is different from that of the Earth and other planets, and the environment will share some characteristics between them, but there are also many different characteristics, so the organisms that can survive in the solar system may be a new species, or they may be creatures on the earth, but only if it can be proved that there are creatures in the solar system, this is a new progress for us. ## Conclusion
Science is a very interesting subject, and its knowledge is very broad, so it has more unknown territory.
Abraham Luno discovered Io, Enceladus, Saturn, and Uranus while he was studying the orbits of the Earth and the Moon, and they were all very spectacular stars, so he had been studying them.
Until the seventh day of his death, the orbit of the satellite has changed abnormally, and the search for extraterrestrial life from the solar system is also a direction for research scholars, we don't know what kind of surprises there are in outer space, but this is one of the charms of science.