The Memoirs of Cultivating Immortals

Chapter 342 Host
In the huge studio hall of Academy City, Wallace, who was temporarily acting as the host, asked Hank Pym, the former superhero Ant-Man: "Dr. Pym, can you tell me that you are hearing When aliens really existed, what was the first thing you thought of?"

Dr. Pym coughed. As the oldest person present and a senior in the field of scientific research, he carefully considered his words before slowly saying: "The first thing I thought of was the 'Fermi Paradox. '."

"The Fermi Paradox?" Wallace was like a professional TV host, persuading: "Can you explain it?"

"Of course." Hank Pym smiled. All the guests present were professional physicists. They said it was an explanation, but they were actually speaking to the audience in front of the TV. "In 1950, the Nobel Prize winner, Physicist Fermi, when discussing aliens with others, inadvertently said, 'Where are they all there?'

It was this simple sentence that triggered a discussion that lasted for half a century. "

Hank Pym's words were transmitted to thousands of households through real-time broadcast.

From the space carrier of SHIELD, to the poor farmers on the snowy plateau, from the hot and dry black Africa, to the ice-covered North and South Pole scientific research stations.

People are listening.

Hank Pym crossed his legs, sorted out his thoughts a bit, and said slowly: "Are human beings the only life in this universe?

According to statistical probability, the probability that life and even civilized races can be born in the universe is not low. At present, the number of stars in the observable universe is about 10 to the 22nd power.

If we are a little arrogant and set that only stars similar to the sun can give birth to life-the probability of this condition is 5%, then the number of stars that meet the requirements is 10% of 22 to the 5nd power.

If the conditions are further restricted, it is set that there must be planets with liquid water in the star system-the probability of this rule is 20%, then the number of stars that meet the requirements is 10 to the 20th power.

In other words, there are as many as 10 to the 20th power in the observable universe on which life may be born. "

Dr. Reed Richards, who was sitting next to Dr. Pym, interjected: "Of course, the possible birth of life is not the same as the absolute birth of life, and the absolute birth of civilization.

If the probability is 0.0001%, then there may be 100 trillion planets in the observable universe that are similar to the civilization level of the earth.

If this scope is narrowed down to the Milky Way, there are 10 planets similar to the level of civilization on Earth. "

10, this is the number of earth-level civilizations that may exist in the Milky Way.

"That's a lot? It's not a lot. Any number is insignificant within the scope of the Milky Way." Li Ang turned his gaze to the camera and said indifferently: "However, what we are discussing here is civilization, a civilization that can continuously evolve .

Stars are planets that have the basis of life.However, the sun on which we live is an extremely young star on a cosmic scale.

In the Milky Way, there are many, many older stars, which means that the civilizations born from these stars may be hundreds of millions of years, or even billions, billions of years earlier than the earth civilization. "

Li Ang snapped his fingers, and a three-dimensional projection suddenly rose in the center of the studio hall, projecting pictures of various eras.

Humans holding sticks and stones high, roaring and dancing around the bonfire;
Human beings who have stepped into the age of slavery, digging graves and preparing living sacrifices;

Human beings who entered the feudal era, built tall buildings, and developed etiquette;
Human beings who have stepped into the age of great navigation, used gunpowder weapons, and galloped across the sea;
World War I, World War II, the application of nuclear weapons, the outbreak of the Cold War, and the disintegration of the Soviet Union.
Scenes of pictures are projected in the projection hall, and finally condensed together to form a simple number: 30000.
"3 years, this is the time occupied by human civilization."

Li Ang said with a smile: "Humans today are like gods in front of the ancient humans 3 years ago.

So what would a civilization that was millions or hundreds of millions of years ahead of the earth look like? "

He paused before saying: "No one can answer this question, but one thing is confirmed, if such a super civilization really exists, it will definitely have a great impact on the surrounding cosmic environment, and it can definitely be destroyed easily observed."

"That's right." Dr. Neil deGrasse Tyson nodded and said, "The diameter of our galaxy is only 10 light-years long. Assume that aliens travel at only one-thousandth of the speed of light. Interstellar travel only takes 1 million years to traverse the Milky Way and colonize a large area of ​​the Milky Way."

"It doesn't even take 1 million years if you use more efficient methods."

Dr. Rajesh Kushrapari finally found a chance to get rid of the embarrassment, and said softly: "If you create a self-replicating von Neumann machine - just like Mr. Leon's mechanical octopus, it is absolutely possible Constantly plundering resources on various planets, and constantly replicating more von Neumann machines,

Like a swarm of locusts multiplying wildly, sweeping across the entire galaxy—for advanced civilizations, this is an extremely effective way of plundering resources. "

"That's right." Li Ang nodded, "Advanced civilizations have too many ways to influence and interfere with the surrounding environment, but to this day, before the appearance of the Chitauri, we still haven't found any trace of their existence.

So the question is, where are they? "

Dr. Pym Hank said quietly: "There are so many possibilities, but we still can't find extraterrestrial civilizations. This is the Fermi paradox."

Reed Richards took over, "Since the Fermi Paradox exists, if we want to explain it, we must find a reasonable explanation in this logical chain.

First, there is no super civilization in the Milky Way. "

"Sorry, Mr. Fantastic, what you said contradicts what you said before. Since there may be 10 Earth-level civilizations in the Milky Way, how can it be possible that there are no super civilizations that can interfere with the Milky Way?" Wallace asked.

Reed Richards, known as one of the smartest people in the world, said with a smile: "There is only one answer, and that is the big filter."

"A first-level civilization can harness the energy of an entire planet, a second-level civilization can harness the energy of an entire star, and a third-level civilization can harness the energy of countless stars across the entire galaxy.

The theory of the big filter refers to the fact that during the process from the emergence of life to the generation of the third-level civilization, there is one or more barriers, which block all life like a wall. "

Li Ang explained to the camera: "This wall is so insurmountable that it will screen out most of the lives-this is the only way to explain why the third-level civilization does not appear in our sight."

(End of this chapter)