Super Battleship Reborn

Compared with any other galaxy that Xiao Yu has visited before, the Maffei galaxy has an obvious feature, that is, there are many unusual giant stars. This means that the Maffei-1 galaxy has a large gas and dust cloud content until now, and has been in an active period.

This is a very obvious thing. The life span of giant stars is relatively short. If we want to maintain a large number of giant stars for a long time, then there must be a steady stream of giant stars to form continuously, and there must be enough giant stars to continue to form. The content of the interstellar dust cloud is used as a support.

Activeness means instability, and instability happens to be the natural enemy of intelligent life. After the level of civilization reaches a certain level, civilization will have a certain ability to resist risks. For example, primitive humans, a major earthquake can wipe out civilization, and now Xiao Yu, the destruction of a river system can't hurt him , Xiao Yu can escape in advance before the river system is destroyed.

Perhaps the Maffei-1 galaxy is a dead galaxy. Xiao Yu thought secretly.

The Maffei galaxy is just a foothold in Xiao Yu's long journey. Xiao Yu's next goal is the Feiyuan galaxy, which is the core of the entire Virgo supercluster of galaxies. The Feiyuan galaxy is too big, which means that there are enough civilization bases. Xiao Yu hopes to meet enough civilizations there and communicate with them, so as to improve his technological development level again.

Faced with frequent and active stellar activities, Xiao Yu stepped into this completely unfamiliar river system.

Perhaps, it is precisely because of the collision of galaxies that Maffei-1 has such a large amount of interstellar dust clouds. Compared with billions of years ago, the intensity of galactic motion in Maffei-1 has been reduced a lot. In the galaxy In the early stage of the collision, it is likely to be a starburst galaxy. Xiao Yu thought secretly, and slowly moved towards the center of the river system.

in constant progress. A large number of galactic-level detectors were distributed. These detectors have perfect self-repair and self-recharging capabilities, as well as self-protection capabilities based on the seventh-level civilization technology. They are Xiao Yu's eyes, and they can allow Xiao Yu to see the entire river system.

When Xiao Yu's main fleet reached the core of the river system, the detection range of these detectors had spread to half the river system. During the long journey of 7,000 years before, Xiao Yu's technology has once again made great progress due to the technological supplement of micro-civilization, so Xiao Yu can now have the ability to detect a river system in such detail.

But the result of the detection disappointed Xiao Yu. Under large-scale detection. Not to mention an intelligent civilization, Xiao Yu didn't even discover an ordinary living planet. The Maffey galaxy presented in front of Xiao Yu, although active. But it is a desolate and dead place. There are no intelligent creatures here, only the stars that are constantly dying and disillusioning are slowly evolving here according to the natural laws in the dark.

The stellar activity here is too active, and the short-lived giant stars scattered throughout the galaxy may be the killers that destroy the seeds of the birth of civilization.

A supernova explosion of a giant star can indiscriminately destroy biological seeds within at least hundreds of light-years. This is like spraying pesticides continuously in the Maffei galaxy. Even if there were any sprouts of life, they would have been killed by this high-strength pesticide long ago. Xiao Yu thought with a little sigh.

The birth of life is really a very harsh process of natural selection. In the age of the earth, people often have questions about scientists' search criteria for searching for extraterrestrial life, such as: Why does extraterrestrial life need water? If life on earth needs water, does extraterrestrial life definitely need water? Why? Life must exist on planets? Life on Earth needs a suitable temperature to survive, so does extraterrestrial life also 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 Maffei galaxy at this moment, there should be creatures that adapt to the environment here.

But the truth told Xiao Yu. This is wrong.

It is not that extraterrestrial life will definitely need water, but that there is a prerequisite for the birth of life, that is, a long-term, stable environment with some kind of protection. There is no doubt that newborn life is very fragile, so they must need some kind of protective 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 cosmic environment is very dangerous, not to mention asteroid impacts, supernova explosions, high-intensity radiation areas after the death of stars, etc., such things abound in the universe, even if there are no such threats, there is still As for the threat of the main star that your own planet surrounds, you must know that a star is not a stable thing. When it sends out light and heat, it also sends out a large amount of harmful rays. Perhaps these rays should not be called A harmful name, but they are unstable, and a nascent life cannot afford any instability.

Infrared rays, x-rays, visible light, gamma rays, these four kinds of light radiation, neutrinos, beta decay and many other radiations, only visible light is the most stable. Therefore, it is inevitable for life to evolve to adapt to visible light. After adapting to visible light, the rest of the radiation is harmful.

This requires water, requires an atmosphere, and requires a magnetic field to provide protection for life. 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, so water is a common indicator for searching for extraterrestrial life, not other liquid substances, such as methane kind.

It's not that liquid methane doesn't provide protection against life, but methane is more complex than water, it's rarer than water. In terms of probability, it is more reasonable to use water as the search indicator.

Gaseous water is too active and thin, while solid water loses its basic fluidity, so what can support life must be liquid water. This puts forward requirements for the temperature in the environment, because obviously, if the temperature of the planet is too low, the water will freeze, and if it is too high, the water will evaporate. 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 are also requirements for the activity intensity of stars-for example, the activity of newborn stars is too strong, and the radiation is too strong, so the probability of life being born around it is very low. For example, an aging red giant star is too big and too unstable, so life generally cannot be born around it.

For example, you can't be in a place with too many asteroids. The impact of asteroids will have a devastating impact on the newborn life. This puts forward a second-level requirement by the way-it is best to have a few giant gaseous bodies outside the planet. planet. Because these gaseous planets can provide perfect protection for the living planets inside, it is best to have a relatively large satellite, which can provide it with the last layer of protection. It can also cause tides and cause the exchange of matter on the planet...

There is actually only one condition for the birth of life, and that is stability. Conditions such as liquid water are the best descriptions of stability.

so. The Maffey galaxy that appeared in front of Xiao Yu at this moment. Life did not evolve.

Perhaps, before the galaxies collided and merged, there was life in the Maffei galaxy, but that time was too long ago, and those lives might have perished long ago. The time is too long, and even the remains cannot be preserved. Xiao Yu sighed secretly in his heart.

The vicissitudes of life, time changes. Hundreds of millions, billions of years of time rush by. The originally bustling galaxies are dead and silent, the originally desolate galaxies are prosperous, and the newborn stars finally explode and turn into dust, and the dust condenses again to become the next generation of stars... Everything is controlled by the invisible hand of time It is slowly evolving.

With this kind of exclamation, Xiao Yu's main fleet came to the core of the river system and visited the central black hole of the Maffei galaxy. Compared with the Milky Way, the mass of the central black hole of Maffei-1 is much lower, only about 300,000 times the mass of the sun. Its black hole activity has almost stopped. Although there are a lot of gas and dust clouds in the Maffei-1 galaxy, these things have not become its food.

This is an ancient giant beast that is sleeping.

Xiao Yu didn't try to disturb its peaceful sleep, Xiao Yu's fleet quietly bypassed it and continued to move forward. But at this moment, Xiao Yu once again made a new discovery.

There was an astonishing thing presented in front of Xiao Yu, it was a palace—although its appearance was different from any palace that Xiao Yu understood, but apart from the name of the palace, Xiao Yu really didn’t know What to call it.

It has obvious characteristics of technological creations, such as a smooth appearance, such as precise geometric structures, such as those things that are obviously artificial light sources, such as those spaceships that are flying around...

After Xiao Yu thought that the Maffei-1 galaxy was just a dead river system and was disappointed with this river system, this palace unexpectedly appeared in front of Xiao Yu, leaving Xiao Yu dumbfounded.

A desolate, simple, atmospheric, vast, advanced, and powerful atmosphere rushed towards Xiao Yu. It seems that using any words of praise on this palace is not enough to describe its greatness. This is not an illusory word, just one aspect of it is enough to make Xiao Yu sigh like this.

It's huge, beyond imagination. The largest warship made by Xiao Yu, the stellar-class warship is as small as dust in front of it. Even a massive 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 the fifth-level 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 towards this goal. This is the original intention of the rainbow, and the upgrade of the protagonist is just to have a wider stage and vision. Compared with the original intention of the rainbow, it is secondary. Said that the rainbow is in the water, and the rainbow also recognized it.

This is something that Rainbow has always insisted on. Rainbow is like this, and Rainbow has no plans to change in the foreseeable future. Although if it is changed, if it is written in a more refreshing style, the battleship will have better results, but it will also lose its own characteristics and become obsolete. This is unacceptable to Rainbow.

If some book lovers only want to watch the refreshing plots such as the protagonist killing the Quartet, but are not interested in the description of various astronomical events and thinking about the universe, you can read other books to adjust.