Is there life on other planets besides the earth?

The answer is no, because the universe, including the solar system, is far more empty than you think, and the means for human beings to observe space are extremely limited. It is difficult to judge whether there is life in the solar system itself, let alone other distant galaxies.

Let's take a look at the general situation.

Exploring the closest star to the solar system The closest star to the solar system is the third star in the Alpha Trina Centauri, also known as Alpha Centauri C. Explain the concept of triad here. Trinity is a three-star system, that is, a system composed of three stars. The hometown of the trio in Three-body is similar to Trinary star system.

Among them, Alpha Centauri C, which is closest to the solar system, is also called proxima centauri. Guess how far this "neighbor" is? 4.22 light years is just a bright spot on the astronomical telescope. Do such stars have planets? If so, is there life on it?

Scientists detect whether objects around proxima centauri exert gravity on it. If there is, it may be a planet. 20 16 On August 24th, the European Southern Observatory discovered a planet in proxima centauri, which is located in the livable zone of proxima centauri, indicating that there may be liquid water. But this information is only an inference. Proxima centauri is just a bright spot on the telescope, and the planet is inferred by gravity. Therefore, before human science and technology can be developed to proxima centauri, it is uncertain whether there is life on it.

Where can life exist in the solar system? Phosphine may exist in the atmosphere of Venus, which may be related to the existence of life, but other factors are not excluded. Because Venus's atmosphere is mainly composed of highly corrosive sulfuric acid clouds, many detectors are broken near Venus. The Venus 9 lander, the only probe that landed on the surface of Venus, also broke down immediately after sending back a photo.

As can be seen from this photo, all the rocks on Venus are bare, and there is nothing else. Moreover, due to the runaway greenhouse effect of Venus, the surface temperature has reached about 400 degrees Celsius, so this star was once considered to be alive, but the detected data completely ruled out this possibility.

Is there life on Mars? The existence of life needs liquid water. At present, Mars probes have only found a lot of ice on the surface, but what is exciting is that on July 25th, 20th18th, the Italian Space Agency announced that there is a super-large subglacial lake under the Mars ice sheet, with a diameter of about 20km.

This is achieved by radar detection, but radar can't detect anything in the water, so it is still unknown whether there is life on Mars at present. The answer will be revealed when human science and technology have the ability to explore the depths of Mars in the future. At present, we can only guess. However, a large amount of water ignited the spark to realize the dream of Martian immigration.

Another planet that may have life is Europa. How can Jupiter's moons have life? Scientists found that Europa's surface may be a layer of ice, and there may be an ocean under the ice. There may be places similar to the deep-sea hot springs on the earth in the depths of the ocean, which are close to the heat source and may provide the necessary environment for the existence of life.

(The picture below shows the imaginary map of Europa's deep-sea probe. )

But before I saw it with my own eyes or the detector tested it myself, it was all just scientists' guesses.

Is the earth the only planet with life? After the above analysis, we know that there is the possibility of life on other planets, but the specific possibility is only speculated by clues, so the answer is still uncertain.

Through astronomical observation, we know that the solar system is not special. Neither the earth nor the sun is the center of the universe. There are hundreds of billions of stars in the solar system alone. According to scientists' speculation, at least one tenth of the stars have planets.

Under such a large number, isn't there a living planet? Therefore, the possibility of alien life is extremely high.

Finally, back to the question, scientists have not found a circle of extraterrestrial life, but only found evidence that there may be extraterrestrial life, but some of these evidences still can't fully prove the existence of extraterrestrial life. However, with the progress of science and technology, these problems will be solved step by step. If we don't see the problem solved in our lifetime, we can only expect future human beings, that is, our descendants, to solve this problem.

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