<h4>Chapter -1: prologue</h4>


    civilization."


    "At 15:46 today, the Paleontological Fossil Excavation Team organized by NASA to Mars excavated arge number of neatly arranged humanoid skeleton fossils in the foundation tunnel of a Mars base."


    "In order to answer some of our questions, we invited Professor Huo Gu, who is located in the International Space Center for remotemand of excavation work."


    As soon as the host''s voice fell, the screen changed, and the host''s interface became a small window. An old man who looked elegant and easy-going and nearly old appeared in front of the public.


    "Hello, Professor Huo Gu." The host said.


    "Hello, host." Huo Gudao.


    "Professor Huo Gu, can you tell us about yourtest research progress on the humanoid skeleton fossils unearthed on Mars. Now it can be said that the whole world, as long as there is awork, is paying attention to this matter."


    "Okay."


    Huo Gu nodded slightly and said, "In order to ensure the integrity of the fossil group and get more information in a short time, we will specifically excavate a humanoid skeleton."


    "From this, we can also conclude that we human beings are not alone in the universe."


    "Because they are Martians?" The host asked.


    Huo Gu shook his head.


    "No, the owners of these humanoid skeletons are not native creatures on Mars. Theye from others and belong to the Martian ecosystem, which is another ecosystem."


    The words were shocking, and the host''s eyes were obviously bigger than before.


    The breathing and tone of the supporting people couldn''t help but be a little short. He said, "Excuse me, which are these humanoid skeletons from? What is the evidence to this conclusion?


    Huo Gudao "Although there are many kinds of life on the, as long as we go back to the source, we can find that they have the same ancestors in the past evolutionary route. We who study ''Mars biology'' call this species at the source of evolution ''the cornerstone species''."


    "This... can you put it inly?" The host''s face was a little embarrassed.


    "Take the earth as an example. The early earth environment was transformed into an oxygen environment. Since then, the mainstream of the earth''s biosphere has relied on the consumption of oxygen to maintain life activities."


    "The same applies to Mars. The mainstream of Martian paleontology is ''exoskeleton'', which are wrapped in bones to support the skin and muscle tissue. Under this system, if there are really Martians, they will be 1.5 times heavier than normal people in the case of the same body, but those humanoid skeletons are not like this. Their The bone structure is more simr to that of the earth''s creatures.


    "So that''s it."


    The host nodded in a trance, and I didn''t know whether he understood it or not.


    "So, were these Martian fossils intelligent life?" The host asked.


    "I can answer this question with certainty, yes." Huo Gu replied.


    "Each corpse is neatly arranged, forming a huge square fossil group, which is very simr to the ''graves'' on our earth."


    "From this, we specte that they are intelligent and not low, at least in the Stone Age."


    Suddenly, the host''s face turned pale, pressed the headset with one hand and listened very carefully for a while, and then asked.


    "Professor Huo Gu, there is a problem on the Inte just now. The number of clicks has exceeded one billion in an instant, and it is rising rapidly. Can we ask you about this problem?"


    "Of course." Huo Gu replied with a smile.


    "What do you think of the thing of ''travelling''? Is it possible that these humanoid skeletons are the former human ancestors who crossed to Mars?


    Huo Gu shook his head with a smile.


    "No, it''s impossible. I just said that it was simr to the earth''s creatures, but not the same. The owner of the skeleton and the earth''s creatures are not the same system."


    In this way, a picture appears on the lower right side of the screen. The bones are quite simr to the human skeletons. The few more prominent differences are that there is a hole in the forehead.


    "We can see that there is a hole in the middle of the forehead of the skeleton, which is not caused by the damage of the skull. ording to theparison of the intracranial structure by ourputer, it is found that the structure of this hole is basically the same as the other two eye sockets. Therefore, we presumably, this hole is an eye socket."


    "That is to say, the owner of the skeleton is a humanoid creature with three eyes."


    "As I just said, ''the cornerstone species'', from the birth of earth creatures to now, no species has three eyes."


    "In addition, the excavation team on Mars made a simple atomic decay cycle measurement. The existence of skeleton fossils was more than 200 million years. At that time, it was still dinosaurs that ruled the earth."


    "But this skeleton is too simr to that of human beings. How can you exin this? Is this too incredible? The host asked unrewd.


    "There is nothing about the simrity of bones. As long as youpare them carefully, it is easy to find two skeletons. In addition to the forehead and eye sockets, the bones of humans and chimpanzees are also very simr. Will the appearance of humans and chimpanzees be so simr that they can''t be distinguished?"


    Huo Gu hesitated for a moment and added another answer.


    "Host, I really have some opinions about ''travel''."


    "Please speak."


    The host suddenly cheered up, and UU Reading .uukanshu''s eyes were bright.


    "Before that, let''s assume that ''travel'' is a true proposition."


    "We all know that the universe is veryrge. At present, the observable universe alone has a diameter of 93 billion light years, and our gxy is also very huge, with about 100 billion stars."


    "There is also our sr system. If defined by celestials, the average radius is 82 astronomical units, that is to say, if I are used as a unit of measurement, it can be about 12.3 billion me."


    "In addition, the position of the celestial bodies is also constantly changing. Our parent star revolves around the sun at a speed of 29.783 kilometers per second every moment."


    "It is hard to imagine that this kind of thing will happen on the earth by crossing, and it is more coincidental that among many earth creatures, human beings are selected as the object of crossing. After sessful crossing, it can also ensure the maintenance of the most basic life activities. It is really incredible."


    "Professor Huo Gu, you... are not optimistic about the existence of ''travel'', are you?" The host asked.


    Huo Gu smiled undeniably.


    "Howe?"


    "In probability, the probability value of what has not happened is never 0. Maybe one day in the future, there will really be such a person who travels through time as told in the novel."


    "What I want to say is that if the time travel really happens one day, I prefer to think that it is an artificial event, an event caused by the subjective behavior of an unknown civilization in the universe, not because of some idents..."


    "Professor Huo Gu?"


    The sudden change caught the host off guard. It took a long time to react and turned his head and shouted regardless of the image.


    "Quickly call 120!"