Vol 3 Chapter 856: The beginning of life

Compared to any other river system that Xiao Yu has visited before, the Maffei galaxy has an obvious feature, that is, many unusual giant stars. This means that the Muffy 1 galaxy has a large amount of gas and dust cloud content until now, and has been in an active period.
This is an obvious thing. The lifetime of giant stars is relatively short. If you want to maintain a large number of giant stars for a long period of time, you must continue to form giant stars, and giant stars must have enough to continue to form. Of interstellar dust cloud content to support.
Being active means instability, and instability happens to be the natural enemy of intelligent life. After the civilization level reaches a certain level, civilization will have a certain ability to resist risks. For example, primitive humans, a large earthquake can extinct civilization, and now Xiao Yu, the destruction of a river system can not hurt him. Xiao Yu could escape before the river system was destroyed.
"Perhaps the Muffy 1 galaxy is a dead galaxy, it is not necessarily said." Xiao Yu thought secretly.
The Muffy 1 galaxy is just a foothold in Xiao Yu's long journey. Xiao Yu's next goal is to fly the kite galaxy, which is the core of the entire Virgo super galaxy cluster. The flying kite galaxy is too big, which means that the base of civilization is enough. Xiao Yu hopes that he can meet enough civilizations there, and communicate with them, and once again improve his technological development level.
Facing frequent star activities, Xiao Yu stepped into this completely strange river system.
"Perhaps it is because of the collision of the river system that Ma Feiyi has such a large amount of interstellar dust clouds. Compared with billions of years ago, Ma Feiyi's river system has reduced its intensity of movement. At the beginning of the collision, it is likely to be a starburst galaxy. "Xiao Yu thought secretly, slowly moving towards the center of the river system.
In constant progress. A large number of river-level detectors were distributed. These detectors have perfect self-healing and self-recharging ability and self-protection ability based on the seventh-level civilization technology. They are the eyes of Xiao Yu, and they can make Xiao Yu's sight spread throughout the river system.
When Xiao Yu's main fleet reached the core of the river system, the detection range of these detectors had spread to the range of half a river system. During the long journey of the previous seven thousand years, Xiao Yu's technology has once again produced a great progress because of the micro-civilized technology supplement, so Xiao Yu can now have the ability to detect a river system in this way.
But the result of the detection disappointed Xiao Yu. Under a large-scale survey. Not to mention a wise civilization, not even an ordinary life planet, Xiao Yu. The Maffei galaxy presented to Xiao Yu, although active. But it is a desolate and dead place. There aren't any intelligent creatures here, some just the stars that are constantly dying out of life here are slowly evolving in accordance with the natural laws of the meditation.
"The stellar activity here is too active. The short-lived giant stars scattered throughout the river system may be the killers of the seeds that destroy the birth of civilization. A supernova explosion of a giant star can indiscriminately destroy biological seeds in at least hundreds of light years. It's like spraying pesticides constantly in the Muffin 1 galaxy. Even if there is a sprout of life, it has long been killed by this high-strength pesticide. "Xiao Yu thought with some sighs. .
The birth of life is really a harsh natural selection process. In the age of the earth, there are often people who question the search criteria for scientists to find extraterrestrial life, such as: "Why does extraterrestrial life need water? If life on earth needs water, must extraterrestrial life require water? Why? Life must exist on the planet? Earth's life needs a suitable temperature to survive, so must extraterrestrial life need this temperature? "
According to this standard, it seems that life is not so demanding on the environment, and different environments will give birth to different lives. Just like the Muffin 1 galaxy at this moment, there should be creatures that adapt to the environment here.
But the fact told Xiao Yu. This is wrong.
It is not that extraterrestrial life will necessarily need water, but that the birth of life has a premise, that is, long-term, stable, and has some kind of protected environment. Newborn life is very fragile. There must be no objection to this, then they must need some kind of protection device, which can allow them to develop slowly and use a long time in exchange for their ability to gradually adapt to the environment.
The universe environment is very sinister, not to mention asteroid impacts, supernova explosions, high-intensity radiation areas after the death of stars, and so on. Such things are everywhere in the universe, even if all these threats are not there, then The threat of the main star surrounded by your own planet. You must know that a star is not a stable thing. When it sends light and heat, it also sends out a lot of harmful rays. Maybe these rays should not be crowned. A harmful name, but they are unstable, and the new life cannot bear any instability.
Of the four types of radiation, infrared, x-ray, visible light, and gamma rays, as well as neutrinos, beta decay, and many other radiations, only visible light is the most stable. Therefore, it is inevitable that life evolved to adapt to visible light. If it adapts to visible light, the rest of the radiation is harmful.
This requires water, the atmosphere, and magnetic fields to protect lives. Why is it water? Because water is a very common substance in the universe, hydrogen is common, and oxygen is also common, so water is common. Therefore, water is a common indicator for searching for extraterrestrial life, not other liquid substances, such as methane. class.
This is not to say that liquid methane cannot provide protection for life, but that methane is more complex than water and it is scarce than water. In terms of probability, it is more reasonable to use water as a search index.
Gaseous water is too active and thin, while solid water loses basic fluidity, so what can support life is necessarily liquid water. This puts forward requirements for the temperature in the environment, because it is clear that if the planet temperature is too low, the water will freeze, and if it is too high, the water will transpiration. If there is a requirement for temperature, there is a requirement for the distance of the planet from the star, and at the same time. There is also a requirement for the intensity of the star's activity-for example, the primordial star's activity is too strong and the radiation is too strong, so the probability of life born around it is very low. For example, an aging red giant is too big and unstable, so it usually cannot give birth to life around it.
For example, you ca n’t be in a place with too many asteroids. Asteroid impacts can have devastating effects on newborn life, which in turn puts forward the next level of requirements-it is best to have a few giant gaseous states on the outside of the planet planet. Because these gaseous planets can provide perfect protection for the inner life planet, it is best to have a relatively large satellite, which provides the last layer of protection for it. It can also cause tidal waves, causing the exchange of matter on the planet ...
There is only one condition for the birth of life, and that is stability. Conditions such as liquid water are best described as stable.
and so. The Maffei Galaxy presenting to Xiao Yu at this moment. Life has not evolved.
"Perhaps, there was life in the Muffin 1 galaxy before the galaxy collided and merged, but those days were too far away, and those lives may have perished long ago. The time is too long to retain the ruins." Xiao Yu sighed secretly in his heart.
Time is changing. Hundreds of millions, billions of years passed in a hurry. The original galaxy is dead, the originally desolate galaxy is prosperous, the newborn star eventually explodes into dust, and the dust condenses again to become the next-generation star ... everything is controlled by the invisible hand of time Slowly evolved.
With this sigh, Xiao Yu's main fleet came to the core of the river system and visited the central black hole of the Maffei one. Compared to the Milky Way, Maffei's central black hole has a much lower mass, only about 300,000 times the mass of the sun. Its black hole activity has also almost stopped. Although there are a large number of gas and dust clouds in the Muffin 1 galaxy, these things have not become its food.
This is an ancient monster that is sleeping.
Xiao Yu didn't try to disturb its sleep, Xiao Yu's fleet quietly bypassed it and continued to move forward. But at this time, Xiao Yu made new discoveries again.
There is something amazing in front of Xiao Yu, it is a palace-although it looks different from any palace understood by Xiao Yu, but Xiao Yu really doesn't know except the name of the palace What should I call it.
It has obvious characteristics of technological creations, such as smooth appearance, precise geometric structures, things that are obviously artificial light sources, such as those that are flying around ...
After Xiao Yu thought that Ma Fei's galaxy was just a dead river system, disappointed with the river system, the palace was unexpectedly presented in front of Xiao Yu, making Xiao Yu startled.
A desolate, simple, atmospheric, vast, advanced, powerful breath rushed towards Xiao Yu. It seems that using any word of praise on this palace is not enough to describe its greatness. This is not an illusory word. In one of these aspects, it is enough for Xiao Yu to have such a sigh.
It's too big ~ EbookFREE.me ~ It's too big to imagine. The largest battleship manufactured by Xiao Yu, the star-level battleships are as small as dust in front of it. Even a huge star is nothing in front of it.
The size of this palace is calculated in light years. (To be continued ...)
ps: The rainbow just wants to do its best to present a universe imagined by the rainbow to everyone, whether it is a description of that fifth civilization, or about various technologies, various astronomical phenomena, or for certain events, For example, the description of the birth of life in this chapter, etc., are all working for this goal. This is the original intention of the rainbow, and the upgrade of the protagonist is only to have a wider stage and vision. Compared with the original intention of the rainbow, it is secondary. Said that the rainbow is on the water, the rainbow also recognized.
This is what Rainbow has always insisted on. Rainbow is like this. In the foreseeable future, Rainbow has no intention to change. Although if you change it, if you write it in a more refreshing style, the battleship will have better results, but it will also lose its own characteristics and stand out from the crowd. This is unacceptable for Rainbow.
If you just want to see the plot such as the main character killing the Quartet, but are not interested in the description of various astronomical events and the thinking about the universe, you can go to see other books to adjust.