Is there only humans in the whole galaxy?

Is there only humans in the whole galaxy?

Is there only humans in the whole galaxy? Scientists worry that the earth is the only home where human beings live. If humans can break through the limitations of other planets in the future, there may be other life on other planets. Share the whole galaxy below. Only humans?

Is there only humans in the whole galaxy? 1 There may be millions of civilizations in the Milky Way alone. The probability of life on the earth may not be unique, but the scope of human exploration is too small for the Milky Way, only knowing that there are people on the earth.

The existence of life on earth and human civilization are telling us the possibility of the universe. Since human beings can emerge and evolve civilization, there will be other life in the universe. There are about 200 billion stars in the Milky Way, most of which are smaller than the sun, so they live longer than the sun. Almost every star has its own planet. According to the range of the solar system's earth orbit, the livable zone of stars can be inferred, and life can be produced if conditions are right.

Among the 200 billion stars, it is hard to say how many planets are in the livable zone, but the influence range of stars is around 1 light-year, which is not very large. There must be other planets in the livable zone. Scientists' observations also confirm this statement. So far, scientists have discovered many terrestrial planets, some of which are very similar to the early environment of the earth and can maintain liquid water. There are gases such as methane and carbon dioxide in the atmosphere. Carbon-based life born in the earth's environment may still be born on other planets.

The formation of life requires many conditions. Life on earth alone is by no means liquid water and small molecular gas, because there is another more important element-phosphorus. Although the distribution of phosphorus in the universe is not very common, it is not only possessed by the solar system, which means that life may still be born on other terrestrial planets. Life in the universe is not necessarily a carbon-based life form on earth.

In the past, scientists have sent information to the vast universe, but after many years, there is still no reply. The universe is too big, and the human signal disappears before it travels far. Humans have not been able to get out of the solar system, and the scope of the universe explored is still very small. Humans only know that there is life in the solar system, but they can't deny the existence of other life in the universe.

Is there only humans in the whole galaxy? Has the Second Earth really been found? It is 300 light years from the ground, which is 1.06 times larger. Scientist: There may be life.

From a scientific point of view, we humans can only live on the earth now. Although in recent years, many scientific explorations have also strengthened the exploration of the "second earth", in the end we have not found out whether there really is a planet suitable for human habitation. Of course, in recent years, we humans have been stepping up our exploration of Mars, hoping to develop Mars into a "second earth" in the future. And the result?

At present, we haven't really landed on Mars, so when the "Mars Migration" plan can really be decided needs further exploration. At the same time, today's Mars is not a completely habitable planet. For the time being, we may only rely on the material of the earth to survive.

According to the scientific report in the Journal of Astrophysics, in the early data of NASA Kepler, scientists found that there is a planet with the size of the earth in the habitable zone. This exoplanet runs in the habitable area of its star, which is located around the star, and the rocky planet can support the liquid water in it. The name of this planet is Kepler-1649c.

At the same time, the report clearly pointed out that this exoplanet is 300 light years away from the Earth, which is the most similar to the size and estimated temperature of the Earth, so the published conditions may be very good. At the same time, the planet is 1.06 times larger than our earth, and it can also receive a certain amount of "starlight", which is similar to the amount of sunlight, but it accounts for 75% of the sunlight transmitted by the sun to our earth.

So from the whole data, this means that exoplanets can really be equivalent to the "second earth", and the temperature and illumination meet the most basic conditions, so maybe humans really found the second earth. But the exoplanet is different from the earth in that it orbits a red dwarf star, which is famous for its star burst, which may make the planet's environment full of challenges to any potential life.

So it is possible that there is life on this planet, but there are also influences from other celestial bodies. According to Thomas Zubusing, deputy director of NASA's Washington Science Mission Bureau, "that is, the second earth is among the stars, waiting to be discovered", so they still say in detail that this is the "second earth".

Of course, in addition to this clear hope planet, scientific reports also point out that there may be exoplanets closer to the earth, such as TRAPPIST- 1f and Tee Garden C, and other temperatures may be closer to the earth's temperature, such as TRAPPIST- 1d and TOI 700d.

However, in these two values, no other exoplanet is considered to be closer to the earth, and it is also located in the habitable area of its system. So today's "Kepler-1649c" may be the best choice, and scientists are committed to further automating the analysis process, which is also one of the most unique earth analogues discovered so far. Is it really "the second earth"? Hope of human migration reappears?

So this discovery can be said to be good news for us humans. After all, we humans are also making continuous progress in exploration. However, if we can completely determine that Kepler-1649c is the future "second earth", it will be not good for us, because our distance from the earth is limited, just as it is difficult to land on the moon and Mars on time today, not to mention this one.

Unless human beings really build a supersonic spaceship and have high-quality fast energy to travel freely in the universe, then we humans may have a chance to really go to this second earth, but the probability is low, because this energy has not yet been discovered.

At the same time, the research on the "Second Earth" is still relatively insufficient. We still have to appeal here. Even if there is the nearest "Martian immigrant", as the earth, it may be the most livable planet for the time being. The earth has endowed the earth with a perfect life system.

Therefore, protecting the earth is still our most important thing at present. According to the scientific report of the United Nations, the ecosystem of our planet is getting worse and worse. Humans should reduce the original damage to the ecosystem, reduce the pollution to the earth and so on, which can be regarded as the benefit to future generations.

Is there only humans in the whole galaxy? 3 Are there other civilizations in the universe?

Although people's actions can only be carried out on the earth now, and no traces of alien life have been found, both scientists and ordinary people believe in the existence of alien life.

The Milky Way has150 billion stars, and there are many more planets. Isn't there life on so many planets? Don't even think about it. Now scientists have successfully discovered hundreds of Earth-like planets within 0/000 light-years from the solar system/KLOC. It is estimated that there may be tens of billions of terrestrial planets in the Milky Way. So to ask whether there is extraterrestrial life in the universe, many people hold a positive answer.

It is well known that scientists are constantly studying and exploring alien civilizations. At the same time, there is a professional formula called "Drake Equation", which can calculate the number of higher life in the galaxy. This formula was put forward by the famous astronomer frank derek in 1960. It is mainly used to predict how many advanced alien life there are in the Milky Way, which is one of the ten amazing facts in the Milky Way.

How many other civilizations are there in the galaxy?

Drake formula has two * * *. The first formula is N=Ng×Fp×Ne×Fl×Fi×Fc×FL, where n represents the number of civilizations in the galaxy that are likely to communicate with humans, and Ng is the number of all stars in the galaxy.

Fp represents the proportion of planets owned by some stars, ne is the number of terrestrial planets in the planetary system, fl is the planet that may evolve life, fi is the probability that advanced life can evolve, fc is the probability that these advanced lives will communicate, and fL is the ratio of the survival time of scientific and technological civilization to the life time of all advanced life on earth.

The second formula is n = R* × FP × ne × fL × fi × fc × L. This formula is similar to the first one, except that R * replaces Ng and L replaces FL. Where R* refers to the average speed of the formation of stars in the Milky Way, and L is the life span of scientific and technological civilization.

Roughly calculated, the number is 750, which means that there may be more than 6,000 civilized planets in the Milky Way, which is also a lot of data. Although this calculation is not very scientific, it can successfully reflect some problems from the side, such as whether there are other civilized planets in the Milky Way. No matter how conservative you use to calculate, the final result can't be 0.

Now people have been exploring the universe, and there may be a definite answer to tell you more in the future.