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The universe is boundless!
According to astronomers' estimates, the Milky Way is a system of 150 billion stars and many nebulae and star clusters. But such a huge galaxy is just a drop in the ocean in the universe. As far as is known, there are at least 100 billion galaxies similar to the Milky Way (extragalactic galaxies) outside the Milky Way.
Each extragalactic galaxy has hundreds of millions to hundreds of billions of sun-like stars and Earth-like planets. In short, in the vast universe, there are too many planets like Earth to be counted.
Not to mention the universe outside the Milky Way, how many planets in the Milky Way galaxy may have aliens?
The American astronomer Stollpie once said: "The number of habitable planets in the Milky Way is about 1 billion." Of course, life on these planets is not necessarily well-evolved, but it can be roughly estimated that between 1 million and 10 million of these planets are inhabited by earthling-like creatures.
Among these aliens, there are many people whose civilization has evolved more than the earthlings. ”
American astronomer Doles calculated that there are about 17 billion stars in the Milky Way that are suitable for biological evolution. And in these star systems, there may be hundreds of millions of planets that can be inhabited by living beings. Based on the speed of human evolution on Earth, he calculated that 320,000 of the 100 million planets may have aliens on them.
Many scientists believe: "There are aliens in the universe. "Although they are different in their calculations, the number of planets that are speculated to have aliens are different.
For reasons that are well known, there is no very strong evidence that there are or are no extraterrestrials.
However, through research, scientists have discovered the presence of compounds that make up life on other planets – proteins and nucleic acids, as well as other compounds.
On February 8, 1969, a large-scale carbonaceous chondrite meteorite rain fell in Arende, Mexico, and scientists found that it contained more than 60 compounds through the identification of the meteorite composition.
On September 28, 1969, a meteorite fell on Australia, and five trace amino acids were found from the meteorite.
On April 11, 1983, in Wuxi, China, a meteorite with a diameter of more than 50 centimeters fell. Scientists have confirmed the presence of amino acids in this piece of meteorite ice.
Human beings will look farther and farther away to explore the universe, and the pace of human beings pursuing aliens will become more and more urgent! I believe that one day, there will be a clear and tangible answer to the mystery of aliens! x
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Aliens and humans have different hands.
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Extraterrestrials are a collective term for the imaginary life of humans outside of Earth.
Although many people have always claimed to have witnessed aliens visiting the earth and even having contact with themselves, most scholars and experts believe that the so-called different degrees of contact between human beings and aliens are actually psychological effects, and the chances of human beings discovering "aliens" are very small, even if they find the existence of aliens, it is almost difficult to have any contact with them.
In the past 50 years of searching, astronomers have not found any conclusive clues about aliens.
As of 2015, the scientific community generally believes that "life occurs only on planets around stars that emit light and heat, but not all stars necessarily have planets". Nebula theory holds that stars were formed from the contraction of a rotating primordial nebula. During contraction, the rotation is accelerated by the conservation of angular momentum, and the nebula gradually becomes flattened due to centrifugal force.
When the central temperature reaches 7 million degrees, there is a thermonuclear reaction that converts hydrogen to helium, and the star is born. In the process, the outer part of the disk condenses into several small celestial bodies - planets. [1]
Chinese name alien.
Foreign name: extraterrestrial being, alias.
Cosmic man meaning.
A general term for extraterrestrial human life.
Representative works. ET", "Three-Body Problem", "Crazy Times".
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Sorry, no. Because there are only aliens in science fiction, and the aliens in reality are too far away from the earth, and we can't visit aliens with our current level of science and technology.
Aliens are a collective term for intelligent beings outside of Earth. There have always been hypothetical theories about "aliens" in ancient and modern times, and there are many strange records of suspected "aliens" in the history books of various countries, but now human beings are still unable to determine whether there is extraterrestrial life, or even the existence of "aliens". >>>More
If they have the ability to come to Earth, it means that they have the ability to fly over time and space. **Aspect: There will definitely be a nuclear bomb or something**. >>>More
In the context of science fiction with intelligent creatures like "Shining Star" outside the earth, the aliens Meili Guo and Keer and the earthlings Tang Dynasty and Tang Bubitter formed a family by mistake, and in the process of dealing with the man in black, the family relationship changed from the beginning of the same situation to the later mutual protection and sharing of joys and sorrows, and finally truly became a warm story of a family. The play allows people to taste the taste of growth and experience the preciousness of family in addition to being hilarious.
I like that.
But that's what I say. >>>More
In fact, it's just as Capricorn said.
However, in terms of debating skills, you should avoid falling into the situation of being asked by the other party to "find evidence", because you can't find evidence, and you must not say that aliens or alien ruins have been found in a certain place on a certain day, year, month, and day. Because the other party will definitely ask you to come up with evidence, and this kind of illusory thing must not be able to produce credible evidence, and the other party will definitely be prepared in advance to refute some famous alien events. >>>More