Chapter 221

Just as people are celebrating their new year and debating over population policy, a series of subtle changes have taken place on the life planet next door.

There are three human satellites floating on this planet, constantly monitoring the surface conditions. The reason why there are only three satellites is that humans did not carry more satellites when they set out from the earth. For such a long time, the three artificial satellites have not had any surface abnormalities, so that people have gradually relaxed their vigilance.

Gliese 581g, an ordinary earth like planet. Because its mass is larger than that of the earth, it has a thicker atmosphere, mainly composed of nitrogen, carbon dioxide, water vapor and a small amount of greenhouse gases such as hydrogen sulfide and methane.

Even if the light intensity of the central star is not high, the average surface temperature can still reach about minus 20 degrees Celsius under the action of the greenhouse effect.

The temperature of minus 20 degrees Celsius is quite comfortable for life. Even life exists tenaciously in the north and south poles of the earth, not to mention alien creatures that have fully adapted to the environment.

Of course, the data of average temperature can't explain anything, because the temperature difference between various regions of the planet is very huge

It's incredible!

Locked by the stellar tide, Gliese 581g always has only one side facing the star. Under the light for many years, the temperature is very hot, and even the water in the center is almost boiling.

But the other side is an eternal night, which is extremely cold. The temperature of more than 100 degrees below zero has led to all the water condensing into thick ice, forming a permanent ice sheet several kilometers thick.

This double sky of ice and fire has formed an astronomical spectacle that people enjoy talking about.

But the planet's landscape is more than that. According to the laws of thermodynamics, heat will spontaneously transfer from the high temperature zone to the low temperature zone. The huge temperature difference between ice and fire causes the air convection of the whole planet to be extremely intense.

The heat and water vapor from the sea water are spontaneously transferred from the warm side to the cold side, which forms a huge wind.

Water vapor condenses when it is cold and forms rainfall. Due to the large amount of ice on the shady side and the high terrain, most of the rain will return to the ocean. This forms the water cycle of the whole planet.

Global large-scale air convection makes typhoons of category 15 and 16 common. Sometimes, these violent hurricanes can reach category 18 or even category 20!

In order to adapt to this windy environment, almost all animals on the planet have the good ability to dig holes. When the wind blows, if you don't hide in the cave, you will lose your chance of survival.

In addition, the oxygen content of this planet is very low, and the energy generated by anaerobic breathing is not much. Most animals are very short and crawl on the ground, which is a little similar to reptiles on earth.

So life can only climb out of the ground for food when necessary.

In short, the twilight line is still the best living area on the planet. The temperature here is appropriate, the precipitation is abundant, and there is a certain amount of light. As long as you can avoid the huge typhoon, life can live well here

Of course, the chaotic hurricane has also caused great obstacles to the whole scientific research action of mankind. With the current productivity of mankind, it is estimated that there will be no return if the scientific research team is put down directly

Send some UAVs or survey vehicles for field exploration. Within a few days, they will be blown away by the hurricane, and then hit the ground heavily and scrapped.

For poor human beings, every scientific instrument is precious. If there is no way to produce it on a large scale, one damaged will be less. So, up to now, humans still don't know the specific situation on the earth's surface. They can only use satellites to watch and monitor from a distance in the sky

After all, life means both opportunity and... Crisis!

On this day, it was sunny and cloudless. It was a rare good weather. The eternal sun hangs in the West and will never set.

A living body like a guinea pig emerges from the earth's surface. It watches around vigilantly, sniffs East and West, and makes foraging movements sensitively.

Those yellow and purple dwarf plants, with short leaves and extremely developed roots, are called "Aruba" by the Gliese. In ancient times, it was not only a kind of food with little taste, but also a raw material for clothes

The guinea pig approached an Aruba and looked up into the sky.

It is not an ordinary creature, but a mechanical mouse!

Powerful electronic eyes began to observe satellites as far away as 330000 kilometers.

There docked the earth times, a huge spaceship, and a large number of machinery are moving back and forth on the surface of the planet

The mechanical mouse recorded all the data.

Yes, this galaxy does have intelligent life!

Even, and the scientific and technological strength is far beyond human estimates.

But fortunately, like the ultimate prediction of new civilization history, most civilizations in the universe are mediocre. Gliese civilization is also in an unprecedented and irreparable recession

"Sir, this is the astronomical data we have taken. Please have a look!"

A Gliese with a length of only one meter is crawling respectfully on the ground, which is their unique etiquette culture to show respect.

Because of their physical structure, these intelligent creatures do not need stools or beds. I usually squat on the ground when I rest, and curl up my whole body when I sleep.

According to human aesthetics, they look a bit like pangolins. There are patches of scales on their yellow skin. Their two front claws are flexible and powerful. At first glance, they are species that are good at digging holes.

Of course, at the current level of technology, they don't need to dig holes with their claws. In order to better engage in complex work, they usually trim their nails.

The officer looked anxiously through the astronomical reports, photos after photos, huge spaceships, and various transportation equipment on the surface. It's not particularly clear, but it's enough.

Everything shows that this foreign civilization is not scientific research, but to take root here!

Several other Gliese are gathered in this small room underground to discuss: "according to our analysis, it is likely that the civilization that sent a signal more than 3000 years ago came from the solar system, more than 20 light-years away from us."

"They've been sending signals... But we didn't reply."

"It seems to be called... Human!"