The sightseeing spaceship stayed in the Ice and Snow Star for 16 days before setting off again. As a popular project, there was no extra space on the sightseeing spaceship, so Yan Xia could only sit on the sofa in the hall. He paid attention to every life form on the spaceship. After the spaceship reached more than 10% of the speed of light, some stars in the starry sky outside the spaceship began to have tails, and the stars in front of the spaceship began to shrink inward, as if they were gathered together, which was not too conspicuous. It is estimated that it will be clearly noticeable when it reaches more than 50% of the speed of light, and it will be particularly obvious when it reaches more than 90% of the speed of light. After reaching the speed of light, you will see that all the starlight is gathered into a point in front of the spaceship, and the surroundings and the back will be dark. It is easy to understand that when the speed is too fast, it means that the photons behind are chasing you, and the photons in front are hitting you. The speed of the photons behind is the speed of light minus the speed of the spaceship, and the speed of the photons in front is the speed of light plus the speed of the spaceship, which will form a speed difference, and the front will receive more photons. The current speed cannot see such a phenomenon. Yan Xia hopes that he can see the day when the light speed spaceship is born. At least it should be 99% of the speed of light. The absolute speed of light cannot be achieved. The energy consumed is too great. Even a warp-speed spacecraft cannot be manufactured by a Level 2 or even Level 3 civilization. After flying in deep space for about 17 years, Yan Xia saw a Leviathan, which was traveling in deep space. This Leviathan seemed to be very old, slow in movement, with scars all over its body, and its entire body was purple-red. Its tentacles were as slender and twisted as tree roots. "After being released, Leviathans gradually showed their gregariousness over the past 500 years. A Leviathan group is formed with about 400 to 700 heads. They show a complete class structure, with the king, queen and generals forming the power class, and the rest are ordinary Leviathans."
"This Leviathan should be the king. The ordinary Leviathan is 300 meters long, and this Leviathan is more than 500 meters in size." "It should have been driven off the throne, otherwise the Leviathan as a king would not leave the Leviathan group. It came to this deep space to find a good place to bury itself." "This phenomenon is extremely rare. After all, the lifespan of Leviathan is not long, with an average of 22 years, and the longest-lived only 38 years." "Most of the time, Leviathan groups are in a star system. The Leviathan group where this king is located should not be far from here. They are migrating." Ella introduced to Yan Xia that Leviathan was created by Yan Xia. It was just too difficult later, so Yan Xia handed this task to Ella. "At their speed, it will probably take hundreds or thousands of generations to get from one star system to another." Yan Xia was shocked just thinking about this. Just like a group of ants crossing the Pacific Ocean for the continuation of their race. "That's right." "There is a certain probability of failure." "They need a lot of food, so they will eat their dead counterparts. Often, there will only be 40 to 60 left out of 500, so it is more valuable to see a single king here. It doesn't want to be eaten, so it escaped." Sure enough, after advancing for another 2 days, the captain of the spacecraft sent a message that they had encountered a group of Leviathans. The tourists who were originally sleeping in the cabin woke up and watched these behemoths. The sightseeing ship almost passed by them. This group of Leviathans had 187 Leviathans, which were arranged in the shape of 1 and traveled in the universe with the help of gas. In order not to waste gas, the gas ejected by the previous Leviathan through some small holes at the tail will be inhaled and used by the next Leviathan. Since there is no resistance in the starry sky, they only need to accelerate at the beginning and then adjust the direction afterwards to complete the migration, and the energy consumption will not reach a terrifying level. The sightseeing ship slowed down and circled around these behemoths for several times before leaving. This place is very close to the destination galaxy, but this is not the end of those Leviathans. After parting ways with them, the sightseeing ship plunged into a dim red star. That is a white dwarf.
White dwarfs are not all white. In fact, over time, they will gradually turn red and finally black, becoming black dwarfs. Yan Xia has been separated from ordinary humans, so he can see the spectrum that humans cannot see. In fact, in the eyes of ordinary people, whether it is a red dwarf, a white dwarf, a yellow dwarf, a blue dwarf, or other giants and supergiants, the light is white. "This white dwarf should be about the same size as the earth, right?" Yan Xia asked through naked eye observation. After knowing the distance to the object, the size of the object can be judged. If it is about the same size as the Earth, this white dwarf is relatively large in the white dwarf family, with a mass of about solar masses. Judging from its spectrum and size, it should be a carbon-oxygen structure, and its lifespan is likely to have reached more than 10 billion years. Due to the excessive gravity of the white dwarf itself, the star compresses carbon atoms and may form diamonds, becoming the so-called brick star. When the distance is close enough, Yan Xia saw a Dyson ring structure surrounding the white dwarf. The Dyson ring surrounds the white dwarf like a cross, with a circumference of about astronomical units, or about million kilometers. The light of a white dwarf is much lower than that of a yellow dwarf, but its surface temperature is very high. The surface temperature of a young and massive white dwarf can be above 10,000 degrees Celsius, so when building a Dyson ring, it is still necessary to stay away from the surface of a white dwarf. "Is this the place of the gods?" Yan Xia couldn't see any place that could deserve this middle school name. The sightseeing spacecraft passed through the border of the wind circle of the white dwarf, and then arrived at the interior of the Dyson ring in less than 4 days. The Dyson ring faces outward with a dark metal plate and interstellar weapons facing the outside, and the inner circle is an ecosystem, which is inspired by "Ring World", one of Larry Niven's works in the "Known Space" series. The sky dome of this ring world created by Ella has a large number of transparent photovoltaic panels, which can absorb light energy while allowing part of the light to reach the ground through the photovoltaic panels. Its energy utilization rate is naturally much lower than that of ordinary photovoltaic panels, but it does not need to use additional bulbs to illuminate the ring world, so it is more efficient. These photovoltaic panels are the inner ring suspended in the air, 13,000 kilometers away from the ground of the ring world. Its thickness is only about 2cm. It not only collects light energy, but also acts as a heat insulator. However, it is not the real main heat insulator. Under these transparent photovoltaic panels is an atmosphere as thick as 13,000 kilometers, which keeps the temperature of the ring world at an average of 47 degrees Celsius. "Dear passengers, we are about to arrive at the place of the gods. Are you ready? We are going to descend!" The sightseeing spacecraft dived towards the ground of the ring world. After entering the atmosphere, it means being captured by the gravity of the ring world. Before reaching the ground, Yan Xia knew why it was called the place of the gods as soon as he entered the atmosphere. He saw a floating continent and countless floating islands. Various mythical creatures were flying in the air. A giant castle 7,000 meters high reflected silver-white light on its surface. A river of heaven surrounded the castle in the air. In the river of heaven, there swam a kind of colorful fish, like an enlarged version of butterfly-winged zebrafish. These colorful fish can glide briefly in the air with their wings spread. They spray water mist and form a rainbow bridge through the refraction of sunlight. Everything is like a dream, making it hard to imagine that this is in the real world.