As time passed, Sun Wukong slowly told Hua Feng some things about exploring extraterrestrial life, although this seemed to have no effect on the matter in front of him, but Hua Feng no longer doubted Sun Wukong's purpose since he confirmed his identity. He believed that Monkey King would not harm him.

Astronomers recently discovered that a fundamental component of ribonucleic acid (RNA) floats in the hot, compact nucleus of a large star-forming region of the Milky Way. It is possible for these molecules to form life-related matter on planets, which means that many corners of the universe are already sprinkled with the seeds of the evolution of life.

There is still no answer to the two biggest questions about existence – are we alone, why we are on Earth?—— and there is still no answer. All kinds of clues come one after another, but it always makes people feel like they are scratching their boots. In the past 10 years, astronomers have discovered organic molecules in meteorites and even in space. But none of this material is found in the clouds of dust and gas orbiting the new star, which is where planets could have been created.

Now, a new discovery has given astronomers even more hope. Using France's IRAN radio butterfly satellite antenna array, a team of European astronomers discovered ethylene glycolal, a monosaccharide that makes up ribose, which happens to be a building block of RNA, in a star-forming region called G31.41+0.31, about 26,000 light-years from Earth. These glycolaldehydes are located in the core of a condensation disc formed by dust and gas. The researchers believe that the newly discovered sugar molecule is apparently formed by a simple reaction between a carbon monoxide molecule and dust particles.

This finding has important implications for explaining the two questions that exist. First, G31.41+0.31 is far from the Milky Way's radiation center, so it is possible that any biological processes will continue to develop once they start here. Secondly, Se, an astrophysicist from University College London in the United Kingdom, who participated in the study

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A Viti said the abundance of ethylene glycolaldehyde in the G31.41+0.31 cloud means that the molecule is "ubiquitous in star-forming regions". This implies that wherever stars and planets form, the basic components of organic molecules will also accumulate there.

Perhaps, but Ka, a radio astronomer at the Max Planck Institute for Radio Astronomy in Bonn, Germany

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I think we still have a long way to go before we can discover the process by which life was formed. He explained that in the case of the Earth, where humans live, "we don't know exactly how many complex interstellar molecules survived the turbulent process of the initial formation of the Earth."

Michael Mumma, an astrophybiologist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, said the basic materials that make up life may have arrived there after the planets formed. For example, the star-forming region in which ethyleneglycolal is located may eventually become a comet. If that's the case, Mumma noted, the comets might be able to send sugar molecules to young planets.

As of 2013, due to the development of scientific standards, scientists still have limited research on extraterrestrial life. One of them is to send experimental instruments to other planets, but this method is limited and cannot be carried out on a large scale. Another idea is to suppose that there are intelligent beings in the universe that are on the same level or higher than ours, and that they are connected by radio waves.

However, since the possible civilization is at least a few dozen light-years away, it is very unrealistic to receive a reply that will be a hundred years later.

Therefore, we should rely not solely on means of communication, but on experimental means. Although we do not have a practical experimental method to show that life is the inevitable result of the evolution of matter, if the laws of physics and chemistry are the laws of the universe, and we have accurately traced the way of life on the earth in our experiments, we can give people more reason to believe that life also exists in the universe.

They explored all the possibilities of existence and searched, but still did not detect the presence of extraterrestrial life.

Scientists postulate that the chemical properties of extraterrestrial life must have: 1) a medium suitable for chemical reactions, and 2) atomic matter that is ubiquitous in the universe and has an unstable structure. The study of extraterrestrial biology or extraterrestrial life is the investigation of the possibility of life in the planets and moons of the Milky Way.

For a long time, people imagined Mars as a living planet, but after several human probes landed on Mars, this imagination was shattered. Since the early 60s of the 20th century, astronomers have tried their best to send exploratory signals to the presumed technologically advanced civilized world. For example, the 305-meter Aresibo radio telescope at the Arecibo Observatory in Puerto Rico is so powerful that it can receive transmitted signals at a distance of 1,000 light-years.

Similarly, the Hubble telescope can observe the electromagnetic spectral lines of stars and planets outside our solar system. Through spectroscopic analysis, astronomers can determine the temperature, type, and abundance of atmospheric molecules, and can speculate on elements necessary for life on certain celestial bodies based on what is known on Earth. The most extensive ongoing program is the U.S. Extraterrestrial Intelligence Exploration (SETI), which focuses on receiving and analyzing signals from space.

Understanding extraterrestrial life according to the knowledge that human beings have mastered is a scientific exploration. We can't leave the knowledge system behind and imagine it arbitrarily.

For example, we can't say that there is a creature that can live on the sun. The existing knowledge tells us that life cannot be formed on stars, but the birth, existence and development of life are absolutely inseparable from the energy provided by the light and heat of stars. Therefore, the first condition for the emergence of life must be the presence of planets around the star.

Stars are thought to be formed by the collapse of clouds of gas and dust. If the low-density primitive nebula contracted under its own gravity and gradually became a rotating flat disk, then the main part of the center would form a star due to a thermonuclear reaction due to the increase in density and temperature, and the surrounding thin disk could form a planetary system.

The evolution of life is an extremely slow process, and its slowness is comparable to the time scale of stellar evolution. A relatively advanced single-celled organism called blue-green algae appeared as early as 3.5 billion years ago, and human intelligent life emerged over a long period of 45 to 5 billion years after the formation of the sun.

Therefore, a young star, even if there are planets around it, cannot have higher life forms. In addition, the luminous lifetime of massive stars is only a few million years, which is far from enough time for life to evolve. Only stars like the Sun or smaller are suitable candidates.

There are about 100 billion stars in our galaxy that meet this condition.

Not all stars are formed with a planetary system. Within the Milky Way, binary stars make up about half of the total number of stars.

There is an argument that for a binary system, even if there are planets formed, it will not be long before those planets either fall on one of the stars or will be thrown into interstellar space away from the binary system. As a result, only a single star is a possible candidate for the second round. If we were optimistic to assume that all individual stars would have an unequal number of planets, there would be about 40 billion planetary stars in the Milky Way.

Life cannot be born on any one star, but it can be born on a planet with the right environment, and the planet must be just the right distance from the star.

At the same time, the existence of liquid water is specifically assumed to be a prerequisite for the existence of life, and these two conditions are very demanding. Life would not have existed if the Earth had been five percent closer to the Sun than it is now, and one percent farther away, the Earth would have frozen completely. Planets around stars that have the meteorological conditions necessary to sustain life are extremely rare. Calculations show that the third round of candidates who can meet this condition is at best only 1 million stars.

One million is still a significant number, but only some form of contact with them can conclusively confirm the existence of life in the field. The most powerful means of communication on the planet today is radio communications. There is no doubt that even human beings, not to mention cyanobacteria billions of years ago, did not have the ability to transmit radio signals more than 100 years ago.

If we are optimistic again, there are highly civilized aliens who have lived in a peaceful and prosperous environment for 1 million years, with highly advanced science and technology, abundant financial resources, and the ability to send powerful radio signals into space without stopping. Then, it would take 4 billion years to evolve into intelligent life, and 1 million years is only 2.5 per 10,000 of them. As a result, only 250 of the 1 million third-round candidates will be able to do so.

If the 250 stars are evenly distributed in the Milky Way, the closest to us is 4,600 light-years. As of 2013, there is no connection with it at all in terms of the level of technology on the planet. The only possibility is that they are more advanced than us, and we will receive their signals.

We humans live on what we think is a vast earth, and the earth is like a drop in the ocean in the solar system. If the size of the solar system is compared to 10,000 steps, human beings have only taken one step forward in their efforts to explore space.

The solar system is even more insignificant than the Milky Way. The Milky Way is 100,000 light-years away, and the universe contains countless galaxies, so we can observe the distance of 12 billion light-years, and we can't know what it looks like beyond 12 billion light-years.

But we believe that life in the universe and even intelligent life is by no means a phenomenon unique to the earth, although rare, and we are not alone. In a philosophical sense, the infinity of the universe is destined to be infinite in the number of celestial bodies, and thus to the same in the number of celestial bodies in which life exists. There is only one problem, and that is that it cannot be discovered.