"Is this why you were attacked?" Du Xingyu asked Green Pupa.

"Absolutely." Green Pupa said, "Our butterfly civilization does not want to join any camp, so after coming to the Milky Way, we have been looking for ways to preserve civilization."

"At the beginning, we tried to create an independent space to wrap our civilization in it."

"Independent space is the star system you wrapped in four-dimensional bubbles?" asked Tours.

"Yes. But we failed." Green Pupa did not shy away from their failures at all. He said: "Whether our fourth-level civilization is built with cutting space or with a four-dimensional barrier, it is actually not called independent space at all!"

"In simple terms, it's like drawing a circle on a two-dimensional plane, and this circle is still in this two-dimensional world."

"Only by mastering the advanced civilization of dimensional technology can we build a truly independent space, which is the so-called small universe technology!"

"You continue, what happened after the butterfly civilization failed to build an independent space?" Lu Xing was very interested in the matter of butterfly civilization, because human civilization is also facing the same problems as butterfly civilization.

Green Pupa continued: "In helplessness, we thought of leaving the Milky Way."

"We sent galaxy warships to explore the surrounding river galaxies, and soon we discovered that there is no so-called civilized hunting ground in the large and small Magellan system near the Milky Way."

While he was telling, artificial intelligence Hongyu opened the star map.

The Little Magellan Galaxy, also known as the Little Magellan Cloud, is located in the constellation Azalea, and is about hundreds of millions of stars apart from the Milky Way 210,000 light-years away.

The Great Magellanic System is only 163,000 light-years away from the Milky Way, one-fifth of the Milky Way's diameter, and has about 20 billion stars.

They are all much smaller in mass than the Milky Way.

"There is no civilized hunting ground for the Magellan Galaxy?" Du Xingyu was thinking about the Green Pupal. If this information is accurate, then there are several possibilities.

First, the civilized hunting grounds in these galaxies have not been opened yet, and second, these galaxies are too small and do not have enough civilization. It may be that the civilized hunting grounds of these galaxies have ended, etc.

"We decided to transfer the entire civilization to the large Magellanic system with relatively abundant resources. The last time the river migration, our civilization took 10,000 years to recover!" said Green Pupa, "So in order to prepare for this migration, we built a free civilization market and collected a large amount of resources."

"We have created a wormhole in the river galaxy that spans hundreds of thousands of light years to achieve the goal of civilization migration!"

"The wormhole spans hundreds of thousands of light-years of space!" Everyone was shocked by the wormhole he described. Human civilization has built wormholes, so naturally they know how difficult it is.

The wormholes of human civilization span hundreds of light years, and the resources they consume are already extremely difficult, and what they built is actually a wormhole that can cross the Milky Way!

After a little thought, you will know how much resources and effort the Butterfly civilization has spent to build this river galaxy wormhole!

"Then why haven't you left the Milky Way?" Chen Hong guessed, "Your wormhole was discovered?"

"Conductor Chen guessed right." Green Pupa said with a wry smile.

"In fact, the butterfly civilization has long been targeted by the two major camps of civilizations. Hunting the fourth-level civilization can bring a lot of benefits."

"Twenty years ago, we closed the market for free civilizations and prepared the entire civilization to leave the galaxy. But at this moment, a level 4 civilization in the angel civilization camp attacked us, forcing us to temporarily close the wormhole and be forced to fight!"

The green pupa shows a picture to the human commanders, which is a familiar starry sky and a cluster of butterflies.

In the butterfly star cluster, tens of billions of warships and spacecraft are flying busy, transporting matter and preparing to leave the Milky Way.

In a secret space of the Butterfly Star Cluster, the star mother tree of the Butterfly civilization spent years hoarding energy to open a wormhole that could be connected to the Great Magellanic System.

Hyperspace fluctuations suddenly appeared outside the wormhole.

"Warning, this is the territory of the Butterfly Civilization. You have entered the military controlled area. Please leave immediately!" While warning, the Butterfly Civilization commanded the battleships to lock in the hyperspace fluctuations.

After a few seconds, an object gradually appears.

It was a neutron star with very strong density and mass. Its size was less than the size of those galaxy-class warships, but as soon as it appeared, the surrounding time and space were immediately affected by its gravity and twisted.

"A neutron star passes through a hyperspace jump?" Yang Shaolin was stunned. How much gravity is the neutron star?

At the end of the evolution process of stars of different masses, there are various forms such as white dwarfs, pulsating variable stars, neutron stars and black holes.

White dwarfs evolved from medium-mass stars with great mass and density.

Humans have used the detonation of a new outbreak on the surface of white dwarfs to annihilate the main fleet of the Skyhawk civilization.

Neutron stars are the largest dense celestial bodies in the universe except for black holes!

The density of a neutron star is 8^14~10^15 grams per cubic centimeter, which is equivalent to more than 100 million tons of weight per cubic centimeter [1]. This density is the density of the atomic nucleus, which is one trillion times the density of water.

Compared with the dozens of tons/cubic centimeter of white dwarfs, the latter seems to be worth mentioning. If the earth is compressed into this way, the diameter of the earth will be only 22 meters!

In fact, the density of neutron stars is so large that the mass of neutron stars with a radius of ten kilometers is comparable to that of the sun.

At this time, the enemy of the Butterfly Civilization actually used neutron stars as weapons and made a hyperspace jump.

"Attack!" No matter who the enemy is, the fleet of Butterfly Civilization has begun to attack.

This is the core area of ​​their civilization, and there are no losses.

However, the attack of the butterfly civilization hits this neutron star with huge density and mass, which is like tickling it.

On the surface of a neutron star, its gravity collapses all matter, and even the atomic nucleus no longer exists!

Electrons are compressed into the nucleus, and homoprotons are neutralized into neutrons, making the atoms composed of only neutrons. The neutron degenerates the neutron star and prevents it from further compressing.

The entire neutron star is formed by such a nucleus next to each other. It can be said that a neutron star is a huge atomic nucleus!

The density of a neutron star is the density of atomic nucleus. The mass of a neutron star is so large that the huge gravity makes the light break free in parabola. It has shown the ability that only some black holes have!

The neutron star locked the target and crashed towards the galaxy-class fleet of the butterfly civilization.

The Butterfly civilization has been operating for thousands of years, with a wealth of wealth, and the Galaxy-class warships have strong performance and much more numerous than human civilization.
Chapter completed!