Chapter 246 Orange Dwarf

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There is one thing that is certain, humans cannot wait until the probe completes the exploration in the nearby star system before setting off, because as far as the current situation is concerned, humans cannot wait in a space without stars.

Yes, that's right, the awakener did not leave humans in a certain star system, but randomly placed them in a starry space with nothing.

It can be said that there is no village in front and no shop behind.

Fortunately, it is not far from the nearby stars. The nearest star system is only 12.9 light years away. With the current navigation capabilities of humans, it will take 43 years to reach this distance.

However, whether to go to this star system is still under discussion, because the docking target that humans want to find now is the kind of star system where life is unlikely to exist.

Yellow dwarf stars like the sun will be excluded by humans first. After all, this type of star is a stable star, and the environment is too good to easily exist life and civilization.

Of course, the new humans do not want to encounter alien civilizations again, so when choosing a destination, they will try to avoid them. Although this is also an environment measured by human standards, it is also good to reduce some of the probability.

At this time, the bridge of the Lyra.

"Chief, the Astronomy Department has updated the star map." The voice of the scientific officer made everyone in the bridge happy.

Thirteen days have passed since the awakener left and humans began to observe the starry sky. The star map update work has finally been completed.

"Okay, pass it over and see where we are first!" Yue Yuan said, and walked behind the staff and looked at the computer screen on the workbench.

Humans have long had general-purpose quantum computers, so the computers equipped for the staff are naturally quantum computers, but only the operating kernel belongs to the general-purpose quantum computer mechanism, such as the screen external device, or the normal screen.

As for holographic screens, touchable 3D projection screens, etc., humans don't even have a clue how to do them, and they still exist in fantasy.

"Uh! This is."

Seeing the position marked in the star map, Yue Yuan was stunned, and then he asked the staff to zoom in and out of the star map again, and then compared the position of the solar system.

At this moment, humans are about 2477 light years away from the non-existent solar system, which is a straight-line distance. If viewed from the perspective of the entire Milky Way, it is on the periphery of the cantilever.

In other words, the awakeners did not follow the direction of human beings' original navigation at all, but turned a corner halfway and took humans to the outer side of the cantilever, where the stars are even sparser than the area where the solar system is located.

From the star map, the average distance between stars is about 19 light years. However, there are many structures such as star clusters, open nebulae, and dense dust clouds scattered between the stars.

It is considered an area with relatively dense gas and dust.

For this reason, the accuracy of optical detection equipment in this star field is much lower. If we look at it from the perspective of the material resources of the star system, it is a remote place.

No wonder the awakeners said that this place is far away from the battlefield area.

Further out of this star field, the star density is even thinner, and then there is an area without stars. If you cross that area without stars, you will reach another cantilever.

Since you are here, you should make the best of it.

Yue Yuan did not dwell on these. After all, as long as you are not in the battlefield area, no matter where you are, it is the same for humans. Anyway, as long as there is a star system, humans can obtain resources for development.

After looking at the star map for a while, Yue Yuan turned to the scientific officer and said, "Have you decided on the target?"

"It has been decided. It is the three stars closest to us." The scientific officer replied, and then motioned Yue Yuan to look at the big screen.

Yue Yuan looked in the direction the scientific officer pointed, and saw that the information of three stars had appeared on the big screen of the bridge.

The closest one is 12.9 light years away, and it is a super blue giant. The second one is an orange dwarf, 16.9 light years away from the human fleet. The last one is a white dwarf 21 light years away from humans.

Because it has been observed through telescopes for some time, humans already have some information about these three stars, such as spectra, star types, and whether there may be planets.

Of course, it is more difficult to judge whether there are planets. After all, many planets have a long revolution period. It is difficult to observe them from a distance of more than ten light years through the transit method, radial velocity method, gravitational perturbation method, etc., because they all require long-term observation.

Therefore, the percentage of the probability of the existence of planets marked on the star map is actually the data simulated by humans based on their own data on the evolution of stars.

Although it is calculated from the database data, it is generally quite accurate. After all, the theory of stellar evolution has been perfected for so many years, so it is not a problem to calculate it roughly.

"Let's go to this orange dwarf, Xiaohong, send the target star data to other spacecraft." Yue Yuan thought for a while and decided on the target.

"Yes, Chief." The communicator called Xiaohong responded in a crisp voice.

Yue Yuan nodded and was about to talk about the fleet's departure, but suddenly remembered something, so he continued to say to Xiaohong: "By the way, didn't we send out a few probes before encountering the awakener? Pay attention to that direction and see if you can receive the signal at that time."

"Okay."

Those probes are more than 2,000 light years away. Even if they receive the signal again, it will be more than 2,000 years later. However, Yue Yuan does not want to give up. After all, the universe is very magical. Maybe those probes will observe some magical phenomena during this period.

The star map has been updated and the target has been determined.

After that, it is time to set off again.

The orange dwarf selected by Yue Yuan is 16.9 light years away. According to the data observed by the telescope, this orange dwarf is about 4.65 times the mass of the sun, with a diameter of 0.24 astronomical units, that is, 25.79 times the diameter of the sun, a visible luminosity of 218.9, a surface temperature of 4350K, a metallicity of -0.04, and a rotation period of 22.675 days.

Compared with blue supergiants, orange dwarfs are more likely to have planets.

As for the white dwarf, it goes without saying that white dwarfs are generally transformed from stars. At the end of their evolution, massive stars will have supernova explosions. After ejecting a large amount of matter, if the remaining core mass is less than 1.44 times the mass of the sun, then the star will evolve into a white dwarf.

Therefore, it is basically difficult for planets to exist in a white dwarf system, unless the planet originally in the star system is large enough and far enough away from the main sequence star.

After the destination was selected, the hibernation command was quickly activated. The distance is 16.9 light years, and the human fleet needs at least 57 years to reach it, so this time it must go into hibernation.

At the same time, the fleet also adjusted its posture, and then, under the inference of the long light column of heavy nuclear fusion and the shining starlight of the cold nuclear pulse engine, it sailed towards the target star.

Time flies, and when the fleet entered the deceleration phase, the veil that had been shrouded on the orange dwarf system due to distance was finally unveiled by humans.