Alpha Centauri AA, i.e. frozen Saturn. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

It was the first planet discovered by the Extraterrestrial Civilizations Project team, and the last planet to be reached by the Mirai spacecraft in the Alpha Centauri system.

The planet is about 125% the volume of the Earth and 1.1 times denser. Its gravity level is estimated to be slightly lower than that of Sand Star, about 118% of Earth's gravity. Its average orbit around star A reaches 1.31 billion kilometers, so the surface temperature of the planet is very low, roughly between -210C ~ -160C.

"Why, frozen Saturn gives me a very peaceful and familiar feeling."

Lynn stared intently at the silver-white planet outside the porthole.

As the Mirai spacecraft approached, the silver-white planet hanging in the dark universe became more and more prominent.

At this time, Hara Chen, Smith and Lynn could already see the texture of the surface with the naked eye without the help of observation equipment, and those were the winding mountains.

Yuan Haochen stopped what he was doing, and the moment he turned around, his eyes inadvertently glanced at an extremely bright star in the distance.

That's the sun!

Yuan Haochen's heart trembled inexplicably, it was the light from the hometown of human civilization......

He couldn't help but keep his eyes on the star again, knowing that a loud voice was coming.

"After analysis, the composition of the atmosphere of the Permafrost Star is as follows: carbon dioxide 9.1%, nitrogen 80.1%, oxygen 6.9%, argon 2.1%, hydrogen 0.9% ......"

Smith informed the other two of them of the results of the analysis of the atmospheric composition of the frozen Saturn.

"Compared with the atmospheric conditions of Sand Star, the carbon dioxide content is much lower, and the oxygen content is also 6% lower, so the atmospheric mass is relatively close to the Earth's atmospheric level." Yuan Haochen said thoughtfully.

"The surface atmospheric pressure is 1.5 Earth standard atmospheres. However, the surface air temperature is too low, around -200 degrees Celsius. Smith continued.

"You probe the water again." Yuan Haochen suggested.

"Okay!"

Ten minutes later.

"Oh my God, come and see!" Smith exclaimed in surprise.

"What's the situation?"

Yuan Chen and Lin En surrounded him.

"Future feedback, there's a lot of water on frozen Saturn, oh no, it should be a lot of ice!" Smith excitedly pointed to the screen and said, "Look at these plains! ”

"It's ......," Lynn looked confused.

"These are completely frozen lakes and oceans!!"

"It's so shocking, it's like a frozen earth!" Lynn muttered to herself, "No wonder Frozen Saturn gives me an inexplicable sense of familiarity......

"This situation is in line with previous speculations." Yuan Haochen said slowly, "According to the binary gravity system model we established before, Permafrost should not be in its current position at the earliest, perhaps it was once located in the habitable zone, but it was gradually thrown to the edge of the star system by the gravity of the binary star system over the long years, and in the near future, it will be completely abandoned and become a wandering planet in the universe." ”

"Could permafrost be the birthplace of the Creator's civilization?" Smith asked.

"Possibly, if not the birthplace, at least a significant habitable planet." Yuan Haochen replied.

"It's a pity, it's a completely frozen world now." Lynn said regretfully.

"Is it possible for permafrost to have life?" Smith continued.

"If there had been a complex and well-established ecosystem on Saturn in the early days, then I believe there would have been some simple life forms that would have survived." Lynn said.

"Oh~" Smith nodded in anticipation of the following.

"You can imagine what would happen to the earth when the sun suddenly disappeared." Yuan Haochen made a hypothesis.

"I know that if the sun suddenly disappears and the earth still exists safely, the earth and the other planets of the solar system will continue to float like a kite with a broken string, without being tied up, because the universe is vacuum, so the earth that has lost the gravitational pull of the sun will fly straight to the depths of space along the tangent of the original orbit and become a wandering planet." Smith said with gusto.

"Yes, we do not discuss the situation in which the Earth is affected by external forces in the process of wandering. Then, without sunlight, the earth will slowly cool down, and soon the world will enter a cold winter. Within a week, the global temperature drops to minus 10 degrees Celsius. At that time, whether we were in the original equatorial tropics or the Antarctic ice sheet, we would feel the biting cold. Within a year, all freshwater lakes and rivers will freeze into ice, and the sea will gradually freeze. In three or four years, the vast ocean on Earth will freeze into a huge block of ice. Yuan Haochen added.

"It looks like the frozen Saturn in front of you." Smith said.

"It will take a long time for this to become the state that Permaturn is currently in."

Hara and Lynn continued to hypothesize and discuss.

"When all the water on Earth is frozen, all the weather phenomena on Earth will disappear now: there will be no wind and rain, snowflakes, clouds, hail, ......, and the Earth will become as peaceful as Saturn. However, the pace of cooling does not stop, and the earth continues to cool down continuously and slowly. ”

"In a few million years, the Earth's surface temperature will drop to about minus 200C, and then it will not decrease again, because the Earth has a hot core, and when the heat emitted from the surface is equal to the heat absorbed from the core, the surface temperature will not drop again."

"As the saying goes, everything grows on the sun. If there were suddenly no sunlight, the entire Earth's ecosystem would soon collapse: first plants would die, then vegetarian animals that depended on plants, and finally carnivores. According to the pyramid of the food chain, the entire ecosystem will disappear one by one. The animals that die early are the animals of the ocean, because as the sea continues to cool, the animals in the ocean will freeze to death and be frozen in huge blocks of ice, perhaps, for millions of years. ”

"Animals on land shouldn't die anytime soon, they may continue to live for years or even decades. The first to die are cold-blooded animals, which will go into hibernation and die slowly, never to wake up again. When the earth loses sunlight, it will soon become a "big refrigerator", and plants, especially those woody plants, will be "refrigerated and kept fresh" for a long time, and herbivores with thicker fur will not worry about food if they can withstand the cold, at least for a few years. Decades later, herbivores and the vast majority of carnivores died, and the earth was littered with frozen carcasses of animals. At that time, the scavengers that survive will have a very happy time, and they will have endless corpses to eat. However, the day will come when the corpses will be eaten, and they will all perish. ”

"Humanity shouldn't be dying out so quickly." Smith asked.

"As for human beings, they must be the last high-level life ...... on Earth to become extinct after the disappearance of the sun" (to be continued. )