Xu Xingchen found a safe place to fix his body, and then opened the information to view the details inside.

A scientific research exploration fleet discovered a relatively special galaxy more than a thousand light years away from the parent galaxy, with the galaxy number 1280.

Two K-shaped stars with mass around 0.6 suns orbit each other at a distance of 40 million kilometers, and the two stars are numbered 1080A and 1080B respectively.

This binary star system composed of two low-mass K-type stars is a very ideal environment for reproduction.

They not only have a wide habitable zone similar to F-type stars, but also have a stable main sequence period of K-type stars ranging from 30 to 40 billion years, but also have a more stable star activity and magnetic field than M-type red dwarfs.

Moreover, K-type stars and double-star galaxies are relatively common in the universe, and even more common than the solar system.

But what is rare is that in the orbits around these two K-shaped stars, in addition to four rocky planets and two gaseous planets, there are two brown dwarfs orbiting them.

Brown dwarfs are called failed stars, and are celestial bodies between giant planets and stars, with mass between about 13 to 80 times Jupiter, or between 1% to 8% of the Sun.

Their size is basically the same as that of giant planets, and even their spectrum may be very similar, but their mass is much larger than that of giant planets. Their lower limit of mass is the upper limit of giant planets.

However, their mass is still not enough to ignite hydrogen (hydrogen) fusion, and can only ignite deuterium fusion or lithium fusion, and usually only lasts 100 to 200 million years.

On the cosmic scale, the time of 200 million years can be considered very short, and it is also very short compared to the lifespan of K-type stars of 30 billion years.

After the internal fusion is completely extinguished, these brown dwarfs are more of super giant planets than stars.

As stars, their lifespan is less than 200 million years, but as planets, they may be maintained until the end of the universe.

The two K-type stars in the 1280 galaxy have been over 3 billion years old, so the two brown dwarfs orbiting them have been extinguished for 3 billion years.

The masses of these two super giant planets are about 32 times and 64 times that of Jupiter, respectively, and are numbered 1280AB-05 and 1280AB-06, respectively, and operate in orbits 316 million kilometers and 500 million kilometers away from the double star particles.

The two gas planets outside their orbits, one is similar to Saturn and the other is similar to Neptune, and are respectively numbered 1280AB-07 and 1280AB-08.

The four rock planets inside their orbits are numbered 1280AB-01, 1280AB-02, 1280AB-03, and 1280AB-04, respectively, and are orbiting 125 million, 164 million, 200 million and 260 million kilometers away from the double star particles.

Among them, rock planets No. 3 and No. 4 are in a relatively ideal position within the habitable zone of the 1280 galaxy, and planet No. 2 is also on the inner edge of the habitable zone.

However, the "backup civilization" discovered in this galaxy is not on rocky planets 3 and 4, but on a large rocky satellite of brown dwarf No. 6.

The larger the planet, the larger the scale and the more natural satellites it has.

The two brown dwarfs in this galaxy, as planets, are real super giant planets, surrounded by a large number of natural satellites.

There are hundreds of satellites with a diameter of more than 100 kilometers, more than a dozen of them with a diameter of more than 1,000 kilometers, and eight of them with a scale of nearly or even more than the Earth.

The satellite where this backup civilization is located is the fourth satellite from the inside out of the No. 6 brown dwarf. Its size is slightly larger than that of the Earth and is basically the same as the 804 elves planet.

The planet's radius is 9,000 kilometers, its volume and mass are 2.82 times that of the earth, its surface area is almost twice that of the earth, and its surface gravity is basically the same as that of the earth.

The orbit is 18 million kilometers away from the brown dwarf, and the orbit period is about 64 Earth Day. It has been locked by the tidal tides of giant planets, and it always has only one side facing the giant planet.

Looking at the basic information of these star systems, Xu Xingchen's interest became increasingly high.

The background and environment of this life planet is really strange to the people on earth.

Located in the double-star galaxy means that humans on this planet can see two suns.

The stars are three times farther away from the Earth's sun, so they are not as bright as the Earth's sun. They should be more like two particularly bright stars.

Living on the moons of giant planets means that there will be a very huge planet in their sky, which may occupy one-third of the sky.

Because it is locked by the giant planet, people on the front of the satellite can see this huge planet regardless of day or night, but people on the other side will never see it.

At the same time, satellites orbit giant planets for one week to form a complete day and night, and the length of this day and night is equivalent to two months on Earth.

So it can be foreseen that the calendar of human civilization on this planet will be completely different from that of the earth.

Their day is as long as a month, equivalent to 64 days on Earth.

The length of a year is 32 days or 32 months, which is equivalent to Earth Day 2048, and is more than five and a half years on Earth...

If the four seasons are divided according to the earth's standards, each season on this planet will last for 512 Earth Days, and winter and summer will be extremely long.

If the Earth's year is extended to this length, the long winter in temperate areas will cause the temperature to continue to drop, and the temperature in summer will continue to rise.

At the same time, the planet is 18 million kilometers away from the brown dwarf orbiting, making the gap between its near-stage and far-stage points exceeding 36 million kilometers, reaching one-fifth of the distance between the Earth and the Sun, and the semi-major axis gap between Venus and the Earth is only 41.5 million kilometers, which should have formed a more obvious temperature difference in winter and summer.

In addition, as a satellite, it is tidally locked by the parent star, and the temperature difference between winter and summer on this planet should reach a very terrifying level, forming a very harsh planetary environment.

However, the actual situation is not like this at all...

According to the report sent by the ship girls, the temperature difference between winter and summer on the surface of this planet is much smaller than that on Earth.

On the side facing the brown dwarf, the minimum temperature in winter is not less than 15 degrees, the maximum temperature in summer is not more than 25 degrees, and the temperature difference is only 10 degrees.

On the side facing the brown dwarf, the lowest temperature in winter drops to about 0 degrees, the highest temperature in summer rises to about 30 degrees, and the temperature difference between winter and summer is only 30 degrees, which is still smaller than most temperate areas on the earth.

Why is this happening?

Xu Xingchen continued to look at the report of the ship girls with doubts.

Data analysis ship girls in the survey fleet believe that the orbit of the No. 6 brown dwarf is 500 million kilometers away from the star, which is 3.35 times the distance from the Earth to the Sun, and it has already left the habitable zone of the star system.

If the brown dwarf is not there and the planet or Earth is placed directly on the orbit where the brown dwarf is located, it will be completely frozen because the overall temperature is too low.

It should be the sunlight reflected by the huge brown dwarf star body, coupled with the huge magnetic field and tidal action of the brown dwarf, and the combined effect of the appropriate greenhouse effect of the satellite atmosphere, the surface of the satellite is heated to a temperature that allows liquid water to exist.

The heat provided by the sunlight directly illuminates the planet, and the proportion of the total heat source of the planet is relatively small, resulting in a relatively small temperature difference.

The temperature of the brown dwarf's stellar reflection, magnetic field action, tidal action, and the greenhouse effect of the planet themselves, is already relatively less affected by the season, which further narrows the temperature difference between winter and summer of the planet.

These factors work together to reduce the temperature difference between winter and summer on the satellite surface to an outrageous level...

However, the ship girl investigator who made the report stated at the end of the report that these factors were still not accurately verified before the guesses. We must continue to obtain more data and continue to analyze and verify before we can make more accurate judgments.

At the same time, the investigator also proposed something that Xu Xingchen needed to make a decision.

Planetary magnetic fields are one of the necessary conditions for Earthlings’ standard habitable planets, but this magnetic field actually has a prefix “suitable”.

The planets built by the Earth and the ship girls have suitable planetary magnetic fields that can deflect high-energy particles in the solar wind, maintain the atmosphere and protect the creatures on the planet's surface.

Without the protection of magnetic fields, the planet's atmosphere and water will gradually be stripped away, and eventually completely lost to become a dead planet.

If the magnetic field of the planet is too strong, it will directly kill the lives around it. The satellites of giant planets face this state.

The brown dwarf is originally a failed star, and its terrifying magnetic field is deadly to humans.

How did this backup civilization humans, or the biosphere on the entire planet, be saved?

Regarding this issue, investigators applied to go directly to the planet's surface and investigate the status of those creatures.
Chapter completed!