The universe is so big, why haven't scientists found a planet with life?
Scientists have put forward many conjectures about the evolution, origin and end of the universe. At present, mainstream science believes that the universe was born in the Singularity Big Bang 65.438+0.382 billion years ago. After a long period of superluminal collision, the diameter of Hubble volume has reached 93 billion light years. According to scientists' estimation, the diameter of Hubble volume is now at least 23 trillion light years, and a light year is astronomical for human beings. This shows that the universe is really big, too big to imagine.
The earth where human beings live is just an ordinary star in the solar system. If the size of the entire solar system is taken as the boundary, the diameter is 2-3 light years. The sun is just one of the more than 200 billion stars in the Milky Way, which is one of the 2 trillion galaxies in the universe. This data is unimaginable.
However, at present, the level of human science and technology and even the solar system have not been completely detected. For example, Jupiter and Saturn, two gas giants, are surrounded by dozens of satellites. Some large satellite scientists believe that they have the conditions for life. The most typical example is Europa, Europa, a planet with a smooth surface and a liquid ocean under the ice. We all know how important liquid water is to the birth of life. According to research, life on the earth originated from the ocean and eventually developed on land. Liquid water is a necessity of life.
Scientists speculate that there is probably life in Europa's liquid ocean, and NASA has a corresponding exploration plan. It is expected that the "Europa Fast Sail" will be launched before 2025.
It can be said that human beings have not thoroughly explored the solar system. Even if there is life and civilization in a corner of the universe, we can't find it now. Especially those creatures that have not developed civilization, we can only find them through field exploration. Now our farthest footprint is the moon 380,000 kilometers away! It can be said that the development of human civilization has a long way to go.
The birth of life and the emergence of civilization are full of various contingencies. It is an exaggeration to say that life may only be born on the earth in the universe, and other planets are barren. Of course, this possibility is very slim. Statistically speaking, there are too many celestial bodies in the universe. Even if life is born by accident, when the cardinal number is large enough, the result of multiplication will be very impressive, which means that there is a high probability of other life and even civilization in the universe.
However, it is precisely because life may be scarce and the scale of the universe is very large that the current level of science and technology of human civilization cannot detect places farther from the earth, so there is no planet with life yet, and it may be difficult to find the existence of extraterrestrial life for a long time in the future. Everything depends on the speed of human development. On the other hand, it may also depend on the speed of the development of extraterrestrial life. Maybe there will be advanced extraterrestrial civilization coming to the earth in the future.
The universe is so big, so-called scientific discovery workers have the ability to see the universe! This shows the limitations of the so-called scientists' methods and means! Also known as stages. Just say how far the so-called telescope can see at this stage! Can tell what things are?
Due to the limitation of human technology at this stage, there is no doubt that it is also progressive! Suitable for this progress is quite limited! Man's ability to restore reality is very limited. So! Nothing can be found in distant galaxies.
Can humans find the sex of a mosquito on the ground in space? Not today, tomorrow is hard to say! It seems that it will take many years.
The discovery of distant things by human beings needs to be accompanied by conscious procedures. Because the medium changes in the distant space distance, the consciousness flutters, and everything you see seems to be in fire and water. Right and wrong.
Other galaxies. Jumping out of the solar system, the nearest galaxy is Sagittarius! But Sagittarius should be three or four light years away! This distance exists in no light, weak light and small. I can't even see it! Advanced astronomy is the same for everything. So! The existence of celestial bodies farther away can only be taken for granted. Taking it for granted is the reality of modern astronomical practice. So we can't find the so-called god, and we can't see the details of biology. .
Astronomy tells people that everything they see is a story and everything they see is right and wrong. We must understand everything from right to wrong. This is the embodiment of human consciousness.
Man hopes to understand the universe with a bigger telescope. But the caliber is big! The resolution has improved! But at the same time, the mechanical properties of disorder have also been strengthened! This is because machinery knows that it must face the objective image of fluctuation and mechanical fluctuation! At the same time, it has the disorder of infinite medium in space. So! Even if we observe the universe with a huge antenna with a cross-sectional area equivalent to that of the earth, our industrial consciousness is limited. At the same time, it needs long-term practice, which is reflected in the scientific processing function of image programs.
Yes! God exists objectively, but scientific instruments cannot be found. Everyone is at ease! One day, with a larger telescope in space, we may be able to find out whether there is life in the galaxy! At the same time, we should be rational, because at this stage, human technical means need to be further updated.
When one day humans can use neutrino telescopes! Then the truth of the universe can be partially reflected. . Maybe life can be found at this time, and there are more life facts in the universe.
Science is not a field of science, science must rely on the overall improvement of social civilization and technology. This progress is the basis of discovering and understanding the times.
Thank you for inviting me!
Theoretically speaking, if human beings want to have contact with other extraterrestrial life, it is the result of the interaction between two civilizations. So there are two directions in technology: first, relying on human science and technology to directly find a living planet; Second, by letting aliens find humans, we can find a planet with intelligent life.
What efforts have humans made to find extraterrestrial life?
First, direct login to the extraterrestrial planet: direct login through manned or unmanned detectors is the most direct way to determine whether there is extraterrestrial life on the planet.
So far, there are only three extraterrestrial planets directly registered by human science and technology. One is the moon, 1969, and Apollo 1 1 spacecraft landed directly. The other is Venus. The former Soviet Union launched Venus 7 probe 1970 to realize a soft landing of Venus. The third one is Mars, which is registered at 1997 by the American Mars Pathfinder Unmanned Detector.
Second, close-range detection of detectors: in short, it is close-range observation by unmanned detectors.
So far, the United States, the former Soviet Union and the European Space Agency have launched a large number of unmanned probes to observe most of the planets in the solar system at close range, including Pluto, the dwarf planet farthest from the sun.
Third, SETI plan: Search for extraterrestrial life by monitoring the electromagnetic signals of alien civilizations.
It was first initiated by American astronomers frank derek and 1960, and has not stopped until now. Unfortunately, so far, human beings have not received any information about intelligent life.
Astronomical observation and analysis: observing and analyzing other planets through large astronomical telescopes.
For example, analyzing the spectra of stars, determining whether there is a dyson sphere, or looking for a super earth.
What efforts have human beings made to let aliens discover human beings?
First, METI plan: send electromagnetic waves to aliens.
Searching for alien civilization by sending strong electromagnetic waves to aliens was first initiated by frank derek and 1974 (Arecibo Information), and later initiated by Russians, Americans, Canadians and Britons many times. So far, the farthest signal transmission is Arecibo information, which theoretically reaches 46 light years; The first signal to reach the destination was the Cosmic Call launched by the Russians in 2003. Theoretically, this signal will arrive around 2036. If there is alien life on the planet and can decipher the information in time to reply to human beings, theoretically, human beings will receive a reply from aliens around 2068. For information about Arecibo and details of METI, please refer to my other articles. )
Second, write letters to aliens: send information about the earth to aliens through detectors.
Under the auspices of American astronomers frank derek and carl sagan, the United States launched the Pioneer Detector 10 and10 in 1972 and 1973 respectively. Both probes carried aluminum plates containing human information, which was the first letter that humans officially wrote to aliens. 1977, the United States launched Voyager 1 and Voyager 2 again, both of which carried gold-plated records containing human information. The farthest flight is Voyager 1, which has reached the edge of the solar system in a narrow sense and is flying to the Kuiper Belt.
The universe is so big, why haven't scientists found a planet with life?
To sum up, no matter what kind of technical direction, human efforts to find aliens lack sufficient technical support, time precipitation and corresponding luck, which are indispensable.
So far, limited by human space technology, both the planet directly landed by human beings and the planet landed and detected by detectors, including the information carried to aliens, are still confined to the solar system. According to the current knowledge of astrophysics, it is almost impossible for life to exist in this range, let alone advanced intelligent civilization. Compared with the vast universe, this range is really too small; However, it is difficult to make a detailed judgment on a planet through astronomical observation; Although both SETI and METI can explore more space in theory, they both need great luck. So until today, despite all efforts, human beings have not been able to find extraterrestrial life, nor have they been able to determine whether there is life on a certain planet.
Committed to science, science fiction, focus on depth, welcome friends who like science fiction to pay attention to: deep science fiction!
My research proves that there are countless living planets in the infinite universe, and the life of any living planet is the same as that of our earth.
There is no point in looking for aliens. Because the infinity of the universe is impossible.
The cycle of basic elements constitutes the universe;
Only Venus is changing the day for the moon;
Water cell eggs move dinosaurs and orcs;
Huntian Sun and Moon are divided into host and Buddhist paradise.
Today, the sun announced three mountains and four mountains at night;
The species of apes in seven continents reached a new high;
The heart of the sun enters science and technology to explore the stars;
In ancient times, there were no aliens at all.
At present, more than one living planet has been found in the solar system. Only when humans arrive at exoplanets can they find out whether there is life on other planets.
We will find it one day.
Are hidden in your house. How to find it?
Looking for a living planet in the universe? This is like asking you to go to the neighborhood next door to see if there are any residents living in that neighborhood. If your body can't get out of your neighborhood or into the neighborhood next door, can you find it? Secondly, if your visual ability is not enough to see the neighborhood next door, or you can't observe it continuously for a long time, or your visual observation ability is limited, can you find out if there are people living in that neighborhood? If your other sensory organs are also limited, can you find out if there are people living in that community? A: Of course it is impossible to find out. The truth, that's it.
Do you think scientists are omnipotent?
In addition, up to now, human beings' cognition of life forms and data collection are actually very limited, and their cognition of life concepts is also very limited.
I hope you are mature and mentally mature. I wish you happiness.