Arc star.

Dong Chen named the second earth Arc Star.

He doesn't feel comfortable with "Arc Light" when he chooses his name now.

"Arc Star" is so good, it not only swears ownership, but also easy to remember, the most important thing is that you don't have to start from scratch to think about the name, it will hurt your brain.

The new galaxies are also called arc galaxies, and then the names of the planets are called arc 1, arc 2, arc 3 from the inside to the outside, ......and then all the way up to arc 7.

This is Dong Chen's official name, as for the specific name, I haven't thought about it, but I only named the most conspicuous life planet, and the overall name...... Not much difference.

"Forget it, that's the name, the name or something is just a codename, don't care, don't care."

Dong Chen has always comforted himself like this.

Since the four unmanned exploration spacecraft have entered, he has received a lot of news in the past few days, and these news have made him more and more excited, but also made him more and more confused.

This red giant star is 232 billion years old, which can be said to be older than the age of the sun, but it has only been a red giant for less than 2 billion years, and it has been in the main sequence stage for more than 200 billion years, but its mass is much smaller than that of the sun, which is understandable.

But for such a long time, the civilization of this galaxy has not developed, which shows how lucky the earth is.

The arc star is smaller than the Earth, only 80% of the diameter of the Earth, and its gravity is about 0.94 times that of the Earth, but it has two satellites, but their size ratio is much more normal compared to the Earth's satellites.

However, they are still very bright in the night sky of arc stars, although the brightness of each one is not as bright as that of the moon, but when both are in the sky, they are much stronger than the moon, at least 15% brighter.

The two satellites are one large and one small, the small orbit is closer, and the orbit is farther, so on the arc star it looks like the small satellite is big, and the big satellite is small.

They are all tide-locked by the Arc Star, and they are always facing the Arc Star, and they also make the tides on the Arc Star change differently from those on Earth, and even when the two moons are on the same side of the Arc Star and line up in a straight line with the Arc Star, there is a high tide.

The rotation of the arc star is equivalent to 20 hours on the earth, that is, the arc star is 20 hours a day, and the rotation around the red giant star is equivalent to 400 days on the earth.

Its temperature is slightly higher than that of the earth, the humidity is a little more, and the changes of the seasons are similar to the earth, but the proportion of its air composition is not suitable for human life.

Although it is also dominated by nitrogen and oxygen, its oxygen content reaches 25%, the ammonia and chlorine in the air composition are much higher than that of the earth, and the content of various rare gases is also higher than that of the earth.

Knowing this information, Dong Chen knew how excellent No. 1's proposal was, if he really had to be wrapped in a spacesuit when he got there, even if he wasn't wrapped in a spacesuit, then an air filter mask would definitely be indispensable.

That's too inconvenient, it's better to have a mechanical stand-in.

To Dong Chen's surprise, the creatures on the arc star, or directly intelligent creatures, turned out to be about the same size and appearance as humans.

In addition to intelligent creatures, the animals and plants of the arc star are also 70% similar to the animals and plants of the earth, although the appearance is not exactly the same, they also have some strange animals and plants that are completely different from the earth, but many things can see the shadow of the animals and plants on the earth.

That's a little weird.

The two galaxies are separated by an unknown number of light years, they can't see each other at all, and the air composition is so different, how can this intelligent creature be similar?

I can't figure it out in a short time, but Dong Chen suspects that this may be related to the wormhole, and if the human and the arc people are relatives who have passed three generations or more, then it is really right to call the arc star the second earth.

This is called 500 years ago is a ...... Uh, five thousand ...... 50,000 ...... Thirty-seven billion years ago it was one.

But this matter is not in a hurry, anyway, billions of years have passed, and it is not bad for a few years, so he just asked No. 1 to record this problem, and when he has time, he will carefully deal with and verify this matter.

After observation, Dong Chen found that the civilization development level of the arc people was not high, it looked a little like the primitive tribal stage, and some like a slave society, but it was a little strange, and the development stages of various places felt very uneven and chaotic.

Their level of metal smelting seems to be very high, and some of the buildings look strange and not like they should be at this stage.

Just when Dong Chen was wondering, Arc Light 3 Star gave him the answer.

Lone Light 3 is the planet that is closer to the red giant than the Arc Star, similar to Mars in the solar system, but the Arc 3 star is larger than Mars, and the atmosphere is thicker than Mars.

Although the upper part was basically covered with yellow sand, the probe spacecraft still found some architectural ruins on it, and there were quite a few of them.

Combined with the situation of this galaxy and the expanding red giant, Dong Chen knew the situation.

It should be that with the expansion of the parent star of this galaxy, the habitable zone of animals in the galaxy has moved outward, and the planets that were suitable for survival in the interior are no longer suitable for survival, and have become what they are now.

It turned out that the planet outside the animal habitable zone came to the habitable zone, and became a beautiful planet suitable for the survival of arc people.

Moreover, Dong Chen also felt that the Arc Man on the Arc 3 Star was not necessarily the First Age Civilization of this star system, after all, this galaxy had existed for too long.

Theoretically, and only theoretically, if we follow the development model of civilization on this side of the earth, the civilization with a high civilization would not know where the waves have gone to the universe for a long time.

The more Dong Chen looked, the more he felt that there were many secrets in this galaxy that could be dug up, but now there was no hurry, anyway, only he knew it now.

And the stand-in robot is still being upgraded, its dedicated small unmanned spacecraft is being built, and the equipment it may need on the arc star is also being made.

and Dong Chen's Black Hawk is also being upgraded, after all, he wants to take the Black Hawk to the wormhole to absorb energy, and then open his third game world, he has been waiting for this day for a long time.

But to carry out this plan, then he will have to wander in space for a long time, after all, there are still two planets between the wormhole and the earth.

Even if the energy concentration can be recharged in advance halfway, it will take 20 days to start, and it is not good to change the cargo compartment of the Black Hawk into a living module.

Therefore, it is necessary to get things done on this side of the earth first, and there are a lot of things on the earth these days.

A few days have passed, and the time has come to June 2020, and under the ultra-fast construction speed of the Arc Group, the new Tiangong space station in its complete form has finally been completed.

With a length of one thousand meters, coupled with the two gravity simulation cabins with a diameter of five hundred meters, its huge body is in orbit on the earth, how powerful it looks.

At the overall completion ceremony, Dong Chen, a group of guests and reporters finally stopped standing in space and staying in the plane, but gathered in the reception hall.

The reception hall belongs to the Arc Group, and it is also a public area, which has been renovated by the Arc Group, and it is also a viewing spot, facing the earth on one side and the moon and space on the other.

Holding a press conference in such a place, the face of the arc group is really heavenly.

Those guests who were invited to come are better, the invitation letter from the Arc Group was delivered directly, and there is nothing to fight about.

The reporters who were invited to come were different, the Arc Group sent the invitation letter directly to their company, as for who they sent, the Arc Group didn't care, and the Arc Group only had to leave a seat.