Milky Way, Dutal Star Domain (Cygnus).

After leaving the Dark Neng Civilization's toe bone observatory located in the Red Dwarf galaxy, Yuan Naichen and others joined the main fleet of the Expeditionary Force as quickly as possible.

At this time, the expeditionary fleet's itinerary was approaching its end, and it was less than 900 light-years away from the Dutal Black Hole (Cygnus-1). According to the mark given by the Toe Bone Observatory, the other three observatory stations with dark energy civilization were 234.5 light-years, 589.3 light-years, and 771.1 light-years away from the expeditionary fleet.

In addition, the star system where the primary planetary civilization is located mentioned by the head of the Toe Bone Observatory is still 159.2 light years away from the Expeditionary Fleet. According to the average speed of the Expeditionary Fleet, it will take at least 16 years to reach the galaxy where the cosmic civilization is located.

The road is long and arduous, and I will search up and down. Seeing that the distance between Dutar black hole is getting closer, the expeditionary army is becoming more and more difficult to suppress.

Psychologically, the more you are about to reach your destination, the more you feel that your pace of progress becomes slower.

No wonder, the ancients once said: Those who travel a hundred miles are half ninety. Sometimes, the last ten miles are psychologically equivalent to the length of ninety kilometers ahead.

As before, all members of the Expeditionary Force participated in the work in a rotating form. During their non-duty period, they entered a dormant state to try to slow down the flow of life, so as to ensure that the old members of the Expeditionary Force could at least reach the Dutar black hole alive and complete scientific research tasks.

Because, in the last part of the itinerary, the Expeditionary Force had learned about the general situation on the route from the observatory of dark energy civilization, so Yuan Naichen increased the number of dormant people during the same period to 70% of the total number of members of the Expeditionary Force.

However, Yuan Shichen always insisted on working. In the final analysis, the reason for this is that his lifespan is far beyond ordinary people and can withstand squandering. Therefore, the long time has been quietly spent in the exploration of scientific research projects, unique star systems or other cosmic celestial bodies passing by.

This time the Expeditionary Force's itinerary spanned thousands of light years was a major gain and scientific research achievement.

Compared with the human civilization that once concealed in a corner of the universe, this expedition greatly expanded human vision and further deepened human understanding of the universe. Along the way, the Expeditionary Force once observed nearly 16,000 stars at close range, and more than 300 star systems flew or crossed. Including the unknown primary planetary universe civilization and dark energy civilization ahead, they have dealt with a total of 4 alien civilizations.

From this, Yuan Shichen initially inferred that although humans are not lonely in this vast universe, the density of cosmic civilization is indeed not high, and each cosmic civilization can control the number of star systems.

Of course, this result does not match the fact that the universe was born for more than one billion years. It is this mismatch that further proves that the high-level civilizations born in the Milky Way have left one after another and headed to the outer space of the universe.

However, in general, it is very difficult to give birth to every form of life in the universe.

Life has various forms, and the requirements for the living environment of different life forms are very different. For one life, it is a paradise environment, but for another life, it may be like hell. For example, the environments in which ancient Gutine civilizations and humans live are paradise and hell.

It is also not easy to find other intelligent creatures, but the Expeditionary Force has accumulated some experience along the way.

There are several conclusions, at least in the current cosmic environment. Although there are special circumstances, generally, planets with smart creatures generally meet these conditions.

First, there is a biological star system, and the stars must be in a stable state and can output sufficient energy in a long and stable manner. Some superstars, stars in the early stages of birth, and stars that turn into red giants after they are old. Due to the strong activity of stars, the internal galaxies are too chaotic. They will easily kill life in the cradle.

Second, the lifespan of a star must be long enough. Short-lived stars like blue super giants, with a lifespan of just millions of years, are fleeting in the vast scale of cosmic time, and they are definitely unable to provide sufficient time conditions for the slow evolution and growth of organisms.

Third, creatures are generally born, reproduce and evolve on planets (maybe there are life on stars, but humans have not yet discovered related to them). Therefore, some lonely star systems without planets, or multi-star systems, will not be the cradle of the birth of life.

Along the way, the scientific team of the Expeditionary Force explored and studied various star systems and also witnessed various forms of planets, which really opened the eyes of scientists and was worth the trip.

"I wonder if there will be creatures in this universe that use gaseous matter as a carrier to exchange matter and energy? After all, theoretically, gaseous matter can also do this."

So far, the cosmic creatures that Yuan Shichen has seen are creatures that exchange energy matter in the body using liquid substances under different temperature environments as carriers.

"The life forms of nucleic acid/protein with water as the medium are indeed the mainstream of life forms in the universe. However, no one can answer this question, what kind of life forms beyond imagination will exist." Yuan Shichen thought.

The Expeditionary Force will soon arrive at the star system where the primary planetary civilization is located mentioned at the Toe Bone Observatory. Yuan Shichen became more and more curious about what kind of cosmic civilization will humans encounter next.

On this day, Rolla, the deputy commander of the rotation of science, knocked on the door of Yuan Shichen's office.

"Leader, the observations of the star system ahead have come out."

"Please show it to me." Yuan Shichen put down his work and walked to the center of the office.

"Please wait."

While answering, Rora began to control the holographic simulation demonstration system.

Soon, the light in the office began to dim, and a dazzling star appeared in the center, emitting dazzling light. Then, the three planets also appeared in sequence and circled around the stars according to certain rules.

"This star is about 1.1 times the size of the star's Sun, and its light energy intensity is 18.1%. "Rola began to give this detailed introduction to Yuan Shichen, "If other asteroids are not counted, there are 3 planets and 7 satellites with larger mass."

"Of these three planets, there are 2 gas planets, and there is only one rocky planet. Two of them are very far away from the stars, and the rocky planets are particularly close to the stars."

Yuan Shichen stared at the star system for a while, then said, "These three planets, including all satellites, are in extreme environments."

"Yes, but according to the description of the dark energy civilization, there is indeed a primary star civilization inside the star system."

Luola also knew very well that the environment in which these three planets were either cold or as hot as fire. In the eyes of human civilization, it was not an ideal place to live.

However, since the dark civilization has said that there is a primary planetary civilization here, the life forms of the unknown civilization should be quite different.

"Rola, guess whether they are an iron-blooded civilization (in a melted metal environment in life) or an ice-blooded civilization?" asked Yuan Shichen.

"Judging from the situation of these three planets, I think the possibility of an iron-blooded civilization will be higher and more interesting."

Rora guessed with interest.

"Then let's wait and see." Yuan Shichen said with a smile.

ps: The work task is very heavy today, so I only have one update. Please understand and thank you for your support.
Chapter completed!