Ever since primitive Homo sapiens first looked up at the stars millions of years ago on Earth, humankind has never stopped exploring the mysterious universe.
It has been developing until today, and Xiao Yu has taken a crucial step.
Human beings have finally moved a full light-year distance.
Although, Xiao Yu is the only human being left in the universe.
Here is the Oort cloud, which is one light-year away from the sun, about 9.5 trillion kilometers away. Looking at the sun here is not as bright as looking at Sirius from the earth. The sun has truly become
An ordinary member among countless stars.
In the distance, a dark meteorite block about ten cubic meters flashed past, quickly running towards the sun.
Xiao Yu smiled bitterly. Because he observed that due to the influence of the mass of his fleet, the orbit of this meteorite has been changed. According to calculations, after thousands of years, it will enter the inner solar system and emit a spectacular comet.
After the end, it will be evaporated by the sun.
Here, there are hundreds of billions of meteorites scattered in the vast darkness, and their total mass is estimated to be about ten times the mass of the Earth. They are the remaining waste materials of the sun. Due to the influence of large planets such as Jupiter, they are not as large as the Earth or
Like Mars, it was lucky enough to form a large planet, but in the gravitational battle billions of years ago, it was expelled from the inner solar system and came to this lonely place. Only a few meteorites can get the chance to encounter the sun again.
Chance.
They are too far away from the sun. So far away that other stars may also have an impact on them. It is expected that in a few million years, a star called Gliese 710 by humans will pass close to them.
At that time, some Oort cloud stars will be captured by it, and other stars may be expelled to the inner solar system by it.
Xiao Yu commanded a village-level spacecraft, nimbly approached a meteorite block with a volume of tens of cubic meters, and captured it within the hull. These meteorites contained some traces of the early stages of the formation of the solar system. For Xiao Yu,
It is very helpful to study the evolution process of stars.
Except for the two meteorites observed by Xiao Yu, the Oort cloud was still as empty as the rest. Xiao Yu's footsteps did not stop at all and continued to pass through at high speed.
The Oort cloud is the final boundary of a star's sphere of influence. Outside the Oort cloud, there will no longer be any stars controlled by the gravity of the sun. Except for a faint starlight, the sun will have no power here.
cause any impact.
Perhaps, five billion years from now, when the sun dies, the planetary nebula it formed may spread here.
Countless time has passed by in a hurry, and more than two thousand years have passed since Xiao Yu left the Oort Cloud.
When 1,600 years passed, all the replacement parts stored by Xiao Yu were used up. So, in the next more than 400 years, fifty village-level spaceships were abandoned. The parts on them
They were disassembled and installed on other spacecraft, replacing their damaged parts. Only an empty shell was left of these fifty village-level spacecraft. Without their power system, they would no longer be able to follow the large army. Xiao
Yu also has no extra ability to carry them. Abandoned, they can only wander along a fixed track in the endless universe forever.
Along with these fifty village-level spacecraft, there were two township-level spacecraft that were abandoned. Although the three county-level spaceships also underwent an overhaul, they still have the ability to continue sailing.
Forty percent of the entire voyage has been completed, a full distance of four light years. If Xiao Yu's goal was the chosen Alpha Centauri star, Xiao Yu would have reached his destination by now.
Alpha Centauri is commonly known as Proxima Centauri. It is a triple star with three stars orbiting each other and moving chaotically. According to observations, there will not be any stable large planets there.
So although it was the closest place, Xiao Yu didn't choose it.
In these two thousand years, Xiao Yu passed through at least four large gas clusters. Every time he passed through a gas cluster, Xiao Yu's speed was reduced once, and then Xiao Yu had to accelerate and correct his course.
Every acceleration and course correction consumes a large amount of fuel. However, thanks to Xiao Yu's initial reserve of as much as possible, the nuclear fusion fuel reserves are still optimistic, enough to support Xiao Yu's voyage to the Tianyuan Four Star System.
The largest of these gas clusters was one light-year long and more than ten light-days wide. It took Xiao Yu more than twenty years to travel through it before passing through it.
There are quite a few such large gas clusters in the universe. In fact, the solar system was born from such a gas cluster. Billions of years ago, this gas was disturbed by a nearby supernova explosion.
The cluster began to slowly shrink toward the center. Eventually, the density of matter in the center of the gas cluster became larger and larger, and the temperature became higher and higher, finally triggering a nuclear fusion reaction, and the primitive sun was born.
The powerful stellar wind of the original sun blew away the dust surrounding itself, and then the dust slowly condensed into planets one by one. After billions of years of development, they stabilized and became what they are today.
If a star exerts a certain influence on this gas mass at this time, a star may be born here in the endless future.
It is a pity that Xiao Yu does not have such ability, otherwise Xiao Yu would be very interested in building a star.
This gas mass reduced Xiao Yu's speed from 563 kilometers per second to 506 kilometers per second, and also caused Xiao Yu's course to shift by one thousandth of a degree.
Interstellar navigation must be absolutely accurate, and its accuracy requirements are more precise than swatting mosquitoes on the moon from the earth. Because the distance is too long, the initial small error will be magnified countless times. If this is allowed to happen,
With an error of one thousandth of a degree, Xiao Yu would pass by tens of billions of kilometers away from his destination.
Fortunately, Xiao Yu had a pulsar navigation system. With the help of the signals from six pulsars, he corrected his course again, and Xiao Yu continued to fly towards Tianyuan Si.
Here, it is five light years away from the sun, four and five point five light years away from Tianyuan. The journey is about to be halfway completed, and 3,700 years have passed since Xiao Yu set off from Saturn.
The loss of village-level spaceships has increased to 135, and the loss of township-level spacecraft has reached eight. However, the three county-level spaceships are still the same, and everything is operating normally. The reason is simple, the county-level spacecraft has the greatest value
, usually, Xiao Yu dismantles the parts from the village-level and township-level spaceships and installs them on the county-level spacecraft. By sacrificing the small spaceship, the health of the large spaceship is gained.
Xiao Yu's fleet was like a group of refugees. Along the way, refugees continued to die of cold and starvation, and were then ruthlessly abandoned.
Although nuclear fusion is the most efficient energy source at this stage, and the materials used to build the spacecraft are the embodiment of Xiao Yu's highest material technology, they are still somewhat powerless in the face of a long time. Before Xiao Yu's technology achieves new breakthroughs,
These losses are inevitable.
Five light-years away from the sun, the brightness of the sun has further weakened, and finally it has disappeared among the stars, and no features can be found anymore. The luminosity of Tianyuan 4 has been getting brighter. There are even a few missing.
Blocked by gas masses, Tianyuan 4 is brighter than the sun when viewed from here.
During these nearly four thousand years, Xiao Yu's technology has been developing, but only at the technical level. For example, Xiao Yu has an updated photon computer construction model. It is expected that after the model is perfected, Xiao Yu will be able to create
Today's photon computers are dozens of times faster in computing speed, but consume much less energy and are much smaller in size, such as more efficient nuclear fusion application technology and the internal mechanism of wood spirit-reinforced materials. Now Xiao Yu can already use
Some kind of strong magnetic field is used to simulate the process of wood spirit strengthening materials, but the efficiency is not as high as that of wood spirit.
Another most significant breakthrough is about laser application technology. Laser application technology can be divided into two aspects. The attack aspect is laser guns, laser cannons, etc. in the traditional sense. The defense aspect is the legendary shield technology.
. Now Xiao Yu has already made preliminary inferences about the energy protective shield technology in his mind. It is nothing more than using a strong magnetic field to restrain high-energy photons to form a protective film outside the spacecraft hull. However, for specific verification, we still need to wait until the Tianyuan Four Galaxy.
, can only be carried out after obtaining sufficient material supplement.
In contrast, there are still no breakthrough developments in basic physics. However, Xiao Yu is not in a hurry. Xiao Yu believes that by reaching the Tianyuan IV galaxy, he can obtain enough material to build a large particle collider that will surround Tianyuan IV.
After that, it is only a matter of time before there is a breakthrough in basic physical theory.
Xiao Yu even had a vague speculation in his mind. If the Huantianyuan Four Large Particle Colliders really find the Higgs boson and thereby verify the Higgs field, Xiao Yu will have the hope of obtaining nearly unlimited
Energy source, when the time comes, all the difficulties that hinder Xiao Yu's voyage will be wiped out.
From here, we can also see the greatness of the theory of relativity and quantum theory. Even now, with the ability to travel between stars, Xiao Yu, who is many years more advanced than human technology, in the final analysis, is still relying on the theory of relativity and quantum theory.
capital.
The endless voyage is still going on. The village-level spaceship that was taking the lead suddenly detected some unusual fluctuations.
It was a burst of radio waves with a certain pattern. Xiao Yu could confirm that this burst of radio waves was not sent by himself.
This radio wave immediately attracted Xiao Yu's full attention. However, because the duration of this radio wave was too short, Xiao Yu was unable to locate its emission source. After thinking about it, Xiao Yu made a decision.