After the disintegration of matter, Xiao Yu tried this time to make a gravity bomb with the largest yield that he could currently make.

These gravity bombs have been transformed by Xiao Yu, from the previous gravity bombs mainly focused on attack range, to improve the energy level of the unit. In Xiao Yu's estimates, within ten meters of the explosion centers of these gravity bombs, the gravitational force will reach the level of the same volume of neutron star matter. It is a gravitational pull strong enough to bend the rays so that they have to follow the parabola before they can escape.

Xiao Yu once heard Tai Hao say that Tai Hao's four-dimensional structure was shattered by the neutron battle star of the Cleaner civilization, which led to its death. So, will this four-dimensional barrier also fall apart under the strong gravitational pull equivalent to the same volume of neutron star matter?

In this regard, Xiao Yu has high expectations.

After two failures, the Elemental Decay Bomb and the Matter Disintegration Ray, more than 2,000 Lucca scientists reinvigorated their spirits, nervously analyzing sets of data and preparing to evaluate the results of the explosion.

The village-level spacecraft loaded with the gravity bomb gradually approached the four-dimensional barrier, and also stopped at a distance of only one meter. After maintaining a relatively stable state of motion, Xiao Yu gave the order to detonate.

Immediately, the Elemental Decay Engine began to produce powerful energy, which, through the conversion of another instrument, was converted into gravity and then violently exploded.

In the face of strong gravity, the first to bear the brunt of this village-level spaceship. Under the strong gravity, it was directly pressed into a small ball, and its density increased by tens of thousands of times.

The reaction caused by the gravity bomb does not stop there. Xiao Yu saw that under the influence of huge gravity, the interstellar dust around the explosion point began to converge wildly here. Countless interstellar dust even formed an accretion disk, which rotated around the explosion point at high speed and continued to converge into the explosion point. Under the high-speed movement, they collided violently. These collisions gave them extremely high energy levels, and some of the interstellar dust that was relatively close to the explosion point gained enough escape velocity to blow them out along the poles of the explosion point, forming two jets that stretched for more than ten kilometers.

At the same time, in the midst of this process, there are extremely intense X-rays, gamma rays.

This scene. The process of accretion of matter in dense stars such as black holes, white dwarfs, and neutron stars is the same.

In this process, Xiao Yu even detected the existence of hyperons.

The hyperon is a very extreme particle that can only exist for a short time. After that, it decays into other particles, in general. Superons only exist in the extremely high temperature and high pressure environment inside neutron stars. But in the center of the explosion of the gravity bomb. Xiao Yu also observed this particle.

The appearance of the hyperon fully illustrates the power of this gravity bomb explosion.

Under the influence of the explosion of this gravity bomb, Xiao Yu was very pleased to see some changes in the four-dimensional barrier. The surface of the four-dimensional barrier is no longer as smooth as before, but has begun to bulge towards the explosion point, and it seems that this four-dimensional barrier is also attracted by a strong gravitational force. And. As the energy of the explosion was fully dissipated, this bulge grew larger and larger......

"Hurry up and break it, hurry up and ......"

This is the common sentiment of Xiao Yu and more than 2,000 Lucca scientists.

But the results disappointed them. This is a gravity bomb. This gravitational pull was maintained for three minutes, and after three minutes, the gravity dissipated, but the four-dimensional barrier never broke, but returned to normal again.

It's bulging, gone.

At this moment, Xiao Yu had an urge to burst into foul language.

The dissipation of gravity led to the occurrence of some of the remaining phenomena. Xiao Yu saw that the matter that had been tightly bound together by gravity, the volume was compressed to an extremely small size, and the density reached the level of a neutron star, exploded violently the moment gravity disappeared. The powerful explosive energy swept across a range of several thousand kilometers, and at the point of the explosion, an extremely bright flash appeared.

But after this process of convergence and dispersion, the village-level spaceship disappeared. Not only that, but all the materials that make up this village-level spaceship, including all the instruments inside, whether metal, plastic, or anything else, have all been reduced to the most basic substance, hydrogen.

This is because under this level of gravity, the structure of the atomic nucleus is torn apart.

This process is the same as that of neutron stars.

This gravity bomb shows that Xiao Yu has fully possessed the ability to make neutron star matter. Yes, although Xiao Yu does not have the ability to cut a piece of material from the neutron star, Xiao Yu can make it himself.

This was an unexpected gain, but Xiao Yu was not happy at all in his heart.

After this failed attempt, Xiao Yu and Luca scientists began to analyze Shiyan this time.

"Master, judging from the fact that the four-dimensional barrier is attracted to the gravity bomb and deformed, the gravity bomb still has some effect. I suggest that we continue to build gravity bombs with a higher yield to attack the four-dimensional barrier. ”

A Lucca scientist said.

"It seems to be true at the moment, but there is one thing we need to be aware of. A gravity bomb with the current yield is almost equivalent to converting half of the mass of a county-level spacecraft into energy, what if it continues to increase the yield, but still can't destroy the four-dimensional barrier? How many attempts can we sustain? ”

Another Lucca scientist said.

"That's a real problem." Xiao Yu said, "But other than that, we don't have any other way. And there is another point to note, that is, the lethality of the gravity bomb seems to have some kind of upper limit, and its gravitational strength cannot exceed the strength of the neutron star. The proposal to create a larger-yield gravity bomb is worth trying, but I don't think much hope should be given to it. Well, make another bomb ten times the power of the current gravity bomb, try again, and if you still can't destroy the four-dimensional barrier, then give up this method. ”

At close range, it is not an exaggeration to say that the gravity bomb made by Xiao Yu before has reached the gravitational strength of a neutron star in the universe.

Things in the universe are wonderful. For example, a proton-level ultra-miniature black hole can hardly have any effect on external matter, and you can't detect its gravity at a slight distance, but even if it is such a tiny black hole, it still has its own horizon boundary, and above its horizon boundary, the escape speed is still the speed of light. This is exactly the same as the big black hole in the universe.

That is, above the event horizon boundary of the ultra-miniature black hole and the giant black hole, the gravitational strength of both is the same. Similarly, within a certain range of the gravity bomb made by Xiao Yu, its gravitational strength is no different from that of a real neutron star - the escape speed is more than 150,000 kilometers per second, and even the light rays must follow the trajectory of the parabola to escape.

The real neutron stars in the universe can still be difficult to withstand their strong gravitational pull at a distance of tens of thousands of kilometers and hundreds of thousands of kilometers away from them, but the seed bomb created by Xiao Yu is different. Not to mention tens of thousands of kilometers, even at a distance of ten kilometers, you can't feel its gravitational pull.

Xiao Yu's gravity bomb basically proves that even the gravitational strength of a neutron star cannot break this four-dimensional barrier. The gravitational strength of the gravity bomb seems to have an upper limit, limiting it from exceeding the gravitational strength of a neutron star. Creating a larger yield gravity bomb is more likely to increase the killing range, rather than the gravitational strength.

But in Xiao Yu's heart, there is still a little bit of luck.

"Perhaps, under a larger yield gravity bomb, there can be some reaction process that I don't yet understand? Perhaps, a gravity bomb with a larger yield can really blow up the four maintenance covers? ”

Xiao Yu thought about it and began to make a second more powerful gravity bomb.

These few shiyans took Xiao Yu a total of five years. In the past five years, the radius of the four-dimensional barrier has shrunk by another 250 million kilometers, because its volume has shrunk, causing the central star to heat the area more efficiently, which has caused the temperature in this area to increase at an accelerated rate.

Xiao Yu has detected that at a distance of 2 billion kilometers from the central star, the temperature has reached 156 degrees, and the temperature in the coldest region has also increased to minus 130 degrees.

These data began to give Xiao Yu a sense of urgency.

At this stage, Xiao Yu can also save fuel usage by moving away from the central star to find places where the temperature is not too high. However, in another ten years, there will be no sub-zero area within the four-dimensional barrier. And to make a gravity bomb of such great power, it takes at least a year - Xiao Yu, there really isn't much time.

Thinking of the words that Taihao said to himself before he died, Xiao Yu couldn't help but have some doubts in his heart.

"Is this Taihao kind or malicious to me...... It said that I had two hundred years, but it turned out that it was only more than seventy years, and the four-dimensional barrier it created was so strong that I really couldn't find a way to break it. ”

"There's no way, let's try again." Xiao Yu thought about it, and hurried to start the manufacture of the second high-power gravity bomb. The gravity bomb created this time will explode in space with the full mass of five county-level spaceships as energy.

"Hopefully, this gravity bomb can break through this four-dimensional barrier......" (To be continued......