Marvel – Immortal Path

In the huge academy city studio, Wallace, who temporarily acted as the host, asked Hank Pym, the former Superhero Antman: "Dr. Pym, you Can you tell me, what did you immediately think about when you heard the real existence of aliens?"

Dr. Pym coughed as the oldest person present and the field of scientific research The senior, he carefully considered some language, and then slowly said: "I am thinking immediately, is the'Fermi Paradox'."

"Fermi Paradox?" Wallace was like Like a professional TV host, he persuaded him and said: "Can you explain it?"

"Of course." Hank Pym laughed. All the guests present are professional physicists. It was an explanation, but it was actually for the audience in front of the TV. "In 1950, Nobel Prize winner and physicist Fermi, when discussing aliens with others, he inadvertently said, "They are all in Where?’

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

The words of Hank·Pym were relayed in real time to Thousands of households.

From the Helicarrier of S.H.I.E.L.D., to the poor farmers on the snow-covered plateau, from the hot and dry black Africa, to the ice-covered scientific research station in the north and south poles.

People are listening.

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

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

If we are arrogant, the setting is only similar to Only stars in the sun can give birth to life-the probability of this condition is 5%, so the number of stars that meet the requirements is 5% of 10 to the 22 power.

If the conditions are further restricted, set the star system There must be a planet with liquid water in it-the probability of this meridian is 20%, so the number of stars that meets the requirements is 10 to the 20th power.

In other words, a planet that may give birth to life, There are as many as 10 to the 20th power in the observable universe."

The Reed Richards doctor sitting next to Dr. Pym interrupted and said, "Of course, the birth of life is not equal to the birth of absolute life. Absolutely born civilization,

If we take the probability of 0.0001%, then there may be a trillion planets in the observable universe that are similar to the Earth civilization level.

If this Once the scope is reduced to the Milky Way, there are 100,000 planets similar to the Earth civilization level."

100,000, this is the number of Earth level civilizations that may exist in the galaxy.

"How much is this? Not much. Any number in the Milky Way galaxy is extremely small." Li Ang turned his gaze to the camera and said calmly, "But, what we are talking about here is Civilization is a civilization that can continue to evolve.

Stars are the basis for life on planets. However, the sun on which we live is a very young star on the scale of the universe.

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

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

Humans holding wooden sticks and stones, ghosts roaring and dancing around the bonfire;

In the age of slaves, humans who are digging tombs and preparing for a living sacrifice;

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Step into the feudal era, build tall buildings, and develop ritual humans;

Step into the era of great navigation, use gunpowder weapons, and gallop across the sea;

World War I, World War II, the application of nuclear weapons, the outbreak of the Cold War, the disintegration of the Soviet Union...

A scene of scenes and scenes of projections in the screening hall were finally condensed together to form a simple number: 30,000.

"Thirty thousand years, this is the time occupied by human civilization."

Li Ang said with a smile: "Humans today and today, in the ancient times of thirty thousand years ago In front of humans, it was like a god.

Then what would a civilization that has been ahead of Earth several millions and hundreds of millions of years look like?"

He paused, Just said: "No one can answer this question, but one thing can be confirmed. If this super civilization really exists, it will definitely have a great impact on the surrounding cosmic environment, and it can definitely be easily observed. "

"That's right." Neil Degrass Tyson doctor nodded said: "Our Milky Way is only 100,000 light-years in diameter. Assuming that aliens only One thousandth of the speed of light, Interstellar travel, it only takes 100 million years to traverse the Milky Way, colonizing a large area within the Milky Way."

"If a more efficient method is used , It doesn’t even need 100 million years."

The Rajesh Kuslapari doctor 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. Li Ang, your mechanical octopus, it can continue to plunder the resources on each planet, and keep copying more von Neumann machines, like crazy breeding The swarm of locusts swept the entire galaxy-for higher civilizations, this is an extremely effective way of plundering resources."

"Yes." Li Ang nodded, "the higher civilizations have too many ways to go Affects and interferes with the surrounding environment, but today, before Chitauri appeared, we still have not found any trace of their existence.

Then the question is, where are they?"

Pym Hank doctor faintly said: "Obviously there are so many probabilities, but we still can't find extraterrestrial civilization. This is the Fermi Paradox. "

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

First, there is no super civilization in the galaxy. "

"Sorry, Mister Fantastic, what you said is in conflict with the previous ones. Since there may be 100,000 Earth-level civilizations in the galaxy, how can there be no super civilization that can interfere with the galaxy? ? "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. "

"Level 1 civilization can control the energy of the entire planet, Level 2 civilization can control the energy of the entire star, and Level 3 civilization can control the energy of countless stars across the entire galaxy.

The big filter theory refers to the emergence of life and the emergence of Level 3 civilization. There is a barrier or even multiple barriers that block all life like a wall. "

Li Ang explained to the camera: "This wall is so insurmountable, it will filter out most of the lives-and this is the way to explain why Level 3 civilization does not appear in us In sight. "