Homo sapiens

Milky Way, Orion Cantilever.

Human territory faces the side of the cantilever of Andromeda.

After more than three hundred years of continuous transformation.

The technology of quasi-gravitational field generators has become more mature. Not only has the energy consumption decreased, but the intensity of the unit quasi-gravitational field generated has also increased a lot.

The planetary systems in this area have all been hollowed out, leaving only single stars, and there are many Dyson structures built on the surfaces of these stars.

Of course, these Dyson masterpieces are not fully covered Dyson spheres, but Dyson rings.

Through the Dyson ring, human civilization can continuously extract energy from stars, and in normal times, most of this energy is invested in the industry of manufacturing neutron materials.

If a war breaks out and the enemy's high-energy particles approach the vicinity, the pseudo-gravitational field generator on the Dyson ring can be activated to generate a super-strong gravitational field, whose gravitational strength is roughly equivalent to that of a medium-sized black hole.

Of course, the specific pseudo-gravitational field strength depends on the mass of the star.

For example, white dwarfs, red dwarfs, orange main sequence stars and yellow main sequence stars, as well as rare giants, blue giants, and blue supergiants are all stars, but the energy they can provide to the Dyson ring is different.

However, considering that giant stars are relatively rare, the vast majority of stars currently transformed by human civilization are red dwarfs, orange main sequence stars, and yellow main sequence stars.

Based on the current test data.

The modified pseudo-gravitational field generator in the core of a red dwarf-level star can generate the gravity of a black hole equivalent to 46,000 solar masses.

The transformed pseudo-gravitational field generator in the core of an orange main-sequence star can generate the gravity of a black hole equivalent to 98,000 solar masses.

The modified pseudo-gravitational field generator in the yellow main sequence star core can generate the gravity of a black hole equivalent to 169,000 solar masses.

A standard medium-sized black hole has a mass of about 100,000 suns.

However, the coverage of quasi-gravitational fields is somewhat different from that of black holes. I don’t know whether it is a technical problem with human quasi-gravitational fields or the quasi-gravitational fields themselves.

Even if it is a pseudo-gravitational field that reaches the level of 169,000 suns, its force field coverage can only reach the limit of 16.9 light-years.

Beyond this range, the quasi-gravitational field has no way to distort space and capture high-energy particles.

In order to ensure the security of human territory, the federal headquarters had to coordinate various groups to draw a special defense circle in the border area.

The defense circle is in the same direction, and at least three star gravitational shields must be present.

At the same time, in order to ensure that these stellar gravity shields can detect incoming strikes in advance, the federal headquarters coordinated various groups and established a specialized Orion cantilever early warning system.

Three levels of warnings have been set up in the area extending outward from the gravity defense circle.

This ensures that most of the attacks will be detected in advance by these three layers of early warning.

After all, the stellar gravitational shield cannot be turned on all the time. Doing so would not only waste a lot of energy, but would also seriously affect humankind's external development.

Nowadays, the gravitational defense circle deployed by human civilization has almost reached an airtight level. Not only are high-energy particle attacks unable to enter the core area of ​​​​human territory, but even those high-speed spacecrafts cannot easily enter the interior of human territory.

Even if human civilization is willing, even passing planetary systems or neutron stars can be pulled and guided through gravitational shields.

Therefore, turning on the gravitational shield at all times is really a luxury.

However, the technological development of human civilization in recent hundreds of years has indeed accelerated a lot.

The emergence of gravity technology has brought about an effect similar to that of an analogy.

Various groups in human civilization are conducting in-depth research on gravity technology, hoping to develop other applications.

For example, the famous "curvature technology" requires the ability to produce space distortion in the front and back, shrinking the space in the front and stretching the space in the back, to achieve the purpose of moving at super-light speeds.

Unfortunately, curvature technology requires distortion of space to an extent that is far beyond what a quasi-gravitational field generator can handle.

At this stage, human civilization can only conduct theoretical verification first, and cannot even build a prototype of a curvature engine.

However, another application was successful.

That application is gravitational field acceleration technology.

In fact, this technology was not developed by human civilization, but was developed by the omnic civilization.

However, this technology is very useless in the hands of omnic civilization, because gravitational field acceleration technology requires a large gravitational source to use the gravitational slingshot principle to increase the speed of the spacecraft.

The "large gravitational source" required is a gravitational field at the level of a black hole. But the problem is that black holes are very rare celestial bodies, and their distribution is very uneven.

This severely limits the application of gravitational field acceleration technology.

It was not until human civilization developed a pseudo-gravitational field generator that this technology regained attention.

Now on the front line of human civilization's development of the outer area of ​​the Orion cantilever, the federal headquarters organized nearby groups to build 11 "high-speed routes."

These high-speed routes are composed of a series of gravitational acceleration stars, which can increase the speed of space battleships or spacecrafts to 45% of the speed of light through continuous relay acceleration.

45% of the speed of light, this speed has exceeded all civilizations currently known to human civilization.

As mentioned before, when the spacecraft's sailing speed gets closer and closer to the speed of light, the kinetic energy brought by its speed itself will also increase exponentially.

In this case, the faster the spacecraft travels, the greater the danger.

Before there was gravitational acceleration technology, the fastest speed of human civilization’s spacecraft was only about 24% of the speed of light.

Now it has almost doubled, and the kinetic energy brought by its speed has increased hundreds of thousands of times.

Obviously, the super magnetic field deflection shield used before can no longer withstand this kind of collision.

The application of every new technology is often accompanied by a series of technological changes.

The same goes for gravitational acceleration technology.

In order to adapt to the extreme speed brought by gravitational acceleration technology, researchers from the Science Division and the Space Industry Division racked their brains and finally came up with a brand-new solution.

This plan is the "Hourglass Plan".

The so-called hourglass plan, as the name suggests, is to transform the shape of the spacecraft into a shape similar to an "hourglass".

Then, in conjunction with the pseudo-gravitational field generator and the magnetic field deflection shield, the oncoming asteroid is sucked into the hole in the middle.

This solution not only solves the risk of asteroids and stardust particles hitting the spacecraft along the way, but can also turn the material sucked into the loophole into a jet working fluid through nuclear fusion and magnetic field constraints, which has an acceleration effect.

This plan allows human civilization's spacecraft to develop its flight speed potential to near-light speed levels.

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