Homo sapiens.

Li Qingye, who has inspected Southeast Asia for more than a month with a synchronous robot, came to Latin America at this time.

But his body is still in the Pan Gu world.

Bagheera appeared in his little biosphere.

"Mr. Chairman, the Space Division has issued a Class A document, which is an investigation report on life on Venus."

Li Qingye rolled his eyes, took the tablet and said, "Is it about those nitrogen algae?"

"No, it's a new discovery." Bagheera shook his head.

At this time, Li Qingye had already seen the investigation report on the tablet, and he raised his brows: "Underground creatures? Or are these advanced forms of creatures? Interesting..."

He continued to look carefully.

The creature temporarily named "Venus pangolin", as well as a series of subsequent explorations and sample captures at the Yungong base, they discovered 387 new species in this stratum.

Most of them are microorganisms, and there are only 14 species of relatively large multicellular organisms like Venus pangolins.

Their ecosystems depend on the abundant geothermal energy of Venus. Without such abundant geothermal energy and the ability of the atmosphere to keep warm, they cannot obtain enough energy.

The great explosion of life on the earth originated from the geothermal heat of the black chimneys on the seabed, and flourished from the irradiation of the sun.

As for the birth of underground life on Venus, according to the research of Yungong Base and related ecological and biological researchers, it is very likely that it was created by underground hot springs.

Although there is no sunlight, the heat energy on the surface of Venus is very abundant. Although the underground temperature is not high due to the obstruction of the stratum, it is precisely this relatively low temperature that makes it possible for life to appear.

After all, the high temperature of 400-500 degrees Celsius on the surface of Venus, not to mention living things, ordinary metals can't handle it.

In the area of ​​1000-1500 meters underground, the temperature is maintained between 33-46 degrees Celsius, which is a temperature that many organisms can bear.

In the investigation report, the investigators also found that Venus pangolins raised crystal ants, and crystal ants feed on sulfur-based fungi. Sulfur-based fungi reproduce by relying on geothermal heat and animal carcasses and excrement. This constitutes a relative complete food chain.

Venus pangolins will dig caves in places with more suitable humidity and temperature, and then stock some crystal ants and sulfur-based fungi in these caves.

Of course, these caves are not random, but only in mineral-rich rock formation areas.

The Venus pangolin is a semi-social creature, usually in a family unit, while the crystal ant is a group creature, with at least tens of thousands in a nest.

Due to the high pressure on Venus, these creatures have evolved bodies that can adapt to ultra-high pressure.

Li Qingye is more curious about how these creatures breathe.

Investigators are equally curious.

From the obtained samples, bacteria and fungi are all developed from anaerobic bacteria. Oxygen is a poisonous gas for them. They absorb sulfur dioxide, carbon dioxide and water, and use heat energy to generate thermosynthesis to achieve energy conversion.

Although sulfur-based fungi can release oxygen, the oxygen they release will soon be absorbed by the elemental iron, elemental copper and other elemental active metals in the formation tunnels.

Obviously, the conversion efficiency of sulfur-based fungi to carbon dioxide and oxygen is mediocre, not as terrifying as that of the cyanobacteria family, which greatly slows down the oxidation rate of Venus formations.

Similarly, crystal ants and Venus pangolins do not breathe oxygen, but methane gas.

In the entire underground world, there are a large number of anaerobic bacteria, many of which are methanogenic bacteria, which caused the methane concentration in the formation to reach about 17%.

The underground atmosphere of this ecosystem contains about 72% carbon dioxide, 17% methane, 5% sulfur dioxide, 3% nitrogen dioxide, and the remaining 3% is hydrogen sulfide, oxygen, radon, hydrogen, nitrogen and Ammonia and the like.

Li Qingye discovered that the methane-producing bacteria on Venus have a much higher methane conversion efficiency than that on Earth, even better than the methane bacteria he transformed using genetic recombination technology.

Of course, he also saw some of the problems, that is, the environments of the two sides are different.

The underground ecosphere of Venus has always been dominated by anaerobic bacteria. Coupled with perennial high temperature and high pressure, this environment makes it easier for methane bacteria to decompose organic matter and convert it into methane.

The environment of the earth certainly cannot give too much living space for anaerobic bacteria. The earth is the site of aerobic organisms.

Li Qingye sighed: "Nature is truly miraculous, a completely different species can be produced between a drink and a peck."

Although Yungong Base's research on Venus' underground ecosystem is just beginning at this stage, he seems to have foreseen the future.

Homo sapiens will surely find similar ecosystems on other planets.

This kind of underground ecosystem may be more common than the earth's surface ecosystem.

After all, if the environmental conditions of the earth are used as the standard, the habitable zone of the so-called planetary system will be very narrow, and even the main sequence stars of the planetary system have relatively strict restrictions.

But if the underground ecosystem of Venus is used as the standard, then almost all terrestrial planets and large rocky satellites are likely to have life.

From the perspective of the birth of life, the core elements for the birth of life are temperature and energy, as well as a suitable chemical medium.

A planet like the Earth, which happens to have a suitable temperature, a large amount of water resources, and a strong geomagnetic field, actually has relatively harsh conditions.

However, the stratigraphic structure of terrestrial planets raises another possibility, that is, groundwater, geothermal heat, and stratum protection. These three conditions can be met in many terrestrial planets.

Therefore, Li Qingye can roughly predict that in the Milky Way and in various planetary systems, the probability of the birth of underground civilizations is higher than that of surface civilizations.

After all, just look at the current solar system. There are underground creatures on Venus, Mars, and the moon, and Venus' atmospheric creatures are added.

The proportion of life on the surface, underground, and atmosphere is 1:3:1.

There are other rocky large moons in the solar system that have not been explored, such as Titan.

From this point of view, the planets with underground organisms may be several times, or even dozens of times, the number of planets with surface organisms.

Of course, for underground organisms to develop to the height of human civilization, the difficulty is higher than that of human civilization.

Because it can be understood that underground organisms are protected by thick rock layers, and this rock layer is like the earth's atmosphere and magnetic field.

The underground civilization needs to break through the limitations of the rock layer and become a surface civilization before it can enter the universe.

They have to cross one more boundary layer than human civilization before they can become a first-level civilization that controls the planetary system.

Breaking through the limit of the rock layer is a very dangerous thing in itself, just like when we enter outer space, the environment on the surface is definitely not suitable for long-term life of underground organisms.

Therefore, underground organisms, surface organisms, and atmospheric organisms should have their own advantages and disadvantages, depending on how they develop and luck.

Human civilization can develop to the present stage, luck accounts for a large part.

After all, in the history of the evolution of life on Earth, destructive mass extinctions abound. Humans just happened to be in this relatively safe vacuum period and took advantage of the opportunity to rise rapidly.

If humans and dinosaurs were in the same era, there is a high probability that they will also receive box lunches with dinosaurs.

Every civilization in the universe is a kind of miracle.

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